Q:Information:  - Tharpu Chuli or Tent Peak is one of the trekking peaks in the Nepali Himalaya range . The peak has a nice central position in the Annapurna range . It is easier to climb than both Hiunchuli and Singu Chuli which also are trekking peaks of the Annapurna . The ascent requires ice climbing equipment . A climbing permit from the NMA costs $ 350 USD for a team of up to four members .  - Nepal, officially the Federal Democratic Republic of Nepal, is a landlocked central Himalayan country in South Asia. It has a population of 26.4 million and is the 93rd largest country by area. Bordering China in the north and India in the south, east, and west, it is the largest sovereign Himalayan state. Nepal does not border Bangladesh, which is located within only 27 km (17 mi) of its southeastern tip. It neither borders Bhutan due to the Indian state of Sikkim being located in between. Nepal has a diverse geography, including fertile plains, subalpine forested hills, and eight of the world's ten tallest mountains, including Mount Everest, the highest point on Earth. Kathmandu is the nation's capital and largest city. It is a multiethnic nation with Nepali as the official language.   - Hiunchuli () is a peak in the Himalayas of central Nepal. The mountain is an extension of Annapurna South. Between this peak and Machapuchare is a narrow section of the Modi Khola valley that provides the only access to the Annapurna Sanctuary.   - A waterfall is a place where water flows over a vertical drop or a series of drops in the course of a stream or river. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf.   - Ice climbing is the activity of ascending inclined ice formations. Usually, ice climbing refers to roped and protected climbing of features such as icefalls, frozen waterfalls, and cliffs and rock slabs covered with ice refrozen from flows of water. For the purposes of climbing, ice can be broadly divided into two spheres, alpine ice and water ice. Alpine ice is found in a mountain environment, usually requires an approach to reach, and is often climbed in an attempt to summit a mountain. Water ice is usually found on a cliff or other outcropping beneath water flows. Alpine ice is frozen precipitation whereas water ice is a frozen liquid flow of water. Most alpine ice is generally one component of a longer route and often less technical, having more in common with standard glacier travel, while water ice is selected largely for its technical challenge. Technical grade is, however, independent of ice type and both types of ice vary greatly in consistency according to weather conditions. Ice can be soft, hard, brittle or tough. Mixed climbing is ascent involving both ice climbing and rock climbing.  - Ice flow. Perhaps the most conspicuous consequence of glacier flow, icefalls occur where the glacier bed steepens and/or narrows. Most glacier ice flows at speeds of a few hundred metres per year or less. However, the flow of ice in an icefall may be measured in kilometres per year. Such rapid flow cannot be accommodated by plastic deformation of the ice. Instead, the ice fractures forming crevasses. Intersecting fractures form ice columns or seracs. These processes are imperceptible for the most part; however, a serac may collapse or topple abruptly and without warning. This behavior often poses the biggest risk to mountaineers climbing in an icefall.  - The Annapurna Sanctuary is a high glacial basin lying 40 km directly north of Pokhara. This oval-shaped plateau sits at an altitude of over 4000 metres, and is surrounded by a ring of mountains, the Annapurna range, most of which are over 7000 metres. With the only entrance a narrow pass between the peaks of Hiunchuli and Machapuchare, where run-off from glaciers drain into Modi Khola River, the Sanctuary was not penetrated by outsiders until 1956. Because of high mountains on all sides, the Annapurna Sanctuary receives only 7 hours of sunlight a day at the height of summer. The unique combination of heights and depths on the 5-7 day trek into the Annapurna Sanctuary give rise to an extraordinary variety of ecosystems. The south-facing slopes are covered in dense tropical jungles of rhododendron and bamboo, while the north-facing slopes, in the rain shadow, have a drier colder climate similar to that of the near-by Tibetan Plateau.  - The Himalayas, or Himalaya, (or ) are a mountain range in Asia separating the plains of the Indian subcontinent from the Tibetan Plateau.  - Annapurna South, also called Annapurna Dakshin or Moditse, is a mountain in the Annapurna Himal range of the Himalayas, and the 101st-highest mountain in the world. It was first ascended in 1964, and is tall. The nearby mountain Hiunchuli is in fact an extension of Annapurna South.  - Singu Chuli (also known as Fluted Peak) is one of the trekking peaks in the Nepali Himalaya range. The peak is located just west of Ganggapurna in the Annapurna Himal. A climbing permit from the NMA costs $350 USD for a team of up to four members. The peak requires ice climbing equipment.  - A glacier (or ) is a persistent body of dense ice that is constantly moving under its own weight; it forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries. Glaciers slowly deform and flow due to stresses induced by their weight, creating crevasses, seracs, and other distinguishing features. They also abrade rock and debris from their substrate to create landforms such as cirques and moraines. Glaciers form only on land and are distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water.  - Machapuchare, Machhapuchchhre or Machhapuchhre, is a mountain in the Annapurna Himalayas of north central Nepal. It is revered by the local population as particularly sacred to the god Shiva, and hence is off limits to climbing.  - Rock climbing is an activity in which participants climb up, down or across natural rock formations or artificial rock walls. The goal is to reach the summit of a formation or the endpoint of a usually pre-defined route without falling. Due to the length and extended endurance required and because accidents are more likely to happen on descent than ascent, Rock Climbers do not usually climb back down the route. It is very rare for a climber to downclimb, especially on the larger multiple pitches (class III- IV and /or multi-day grades IV-VI climbs). Professional Rock climbing competitions have the objectives of either completing the route in the quickest possible time or attaining the farthest point on an increasingly difficult route. Scrambling, another activity involving the scaling of hills and similar formations, is similar to rock climbing. However, rock climbing is generally differentiated by its sustained use of hands to support the climber's weight as well as to provide balance.  - Mixed climbing is a combination of ice climbing and rock climbing generally using ice climbing equipment such as crampons and ice tools. Mixed climbing has inspired its own specialized gear such as boots which are similar to climbing shoes but feature built in crampons. Dry-tooling is mixed climbing's most specialized skill and has since evolved into a "sport" unto itself.  - A trekking peak is a mountain under that is considered climbable by anyone with a moderate amount of mountaineering experience and skills. While some can be climbed without crampons or an ice axe, most require use of this equipment.   - Climbing is the activity of using one's hands, feet, or any other part of the body to ascend a steep object. It is done recreationally, competitively, in trades that rely on it, and in emergency rescue and military operations. It is done indoors and out, on natural and manmade structures.    After reading the paragraphs above, we are interested in knowing the entity with which 'tharpu chuli' exhibits the relationship of 'instance of'. Find the answer from the choices below.  Choices: - activity  - border  - city  - climate  - combination  - country  - course  - drop  - eight  - equipment  - extension  - feature  - formation  - glacier  - god  - high mountains  - hundred  - iceberg  - icefall  - india  - lake  - may  - mountain  - mountain range  - object  - plateau  - point  - population  - range  - republic  - rescue  - ring  - river  - rock  - route  - sanctuary  - series  - skill  - snow  - sport  - standard  - subcontinent  - summit  - team  - two  - valley  - water  - waterfall  - weather  - year
A:
mountain