Please answer the following question: Information:  - The Constitution of the Islamic Republic of Pakistan (Urdu: ), also known as the 1973 Constitution is the supreme law of Pakistan. Drafted by the government of Zulfiqar Ali Bhutto, with additional assistance from the country's opposition parties, it was approved by the Parliament on April 10 and ratified on 14 August 1973.  - The Pakistan Navy (reporting name: PN) is the naval warfare branch of the Pakistan Armed Forces, responsible for Pakistan's of coastline along the Arabian Sea, and the defence of important civilian harbours and military bases. The Pakistan Navy came into the existence after the independence of Pakistan in 1947. The President of Pakistan serves as the Supreme Commander of the Navy under Article 243 (2) of the Constitution of Pakistan, and the Chief of Naval Staff heads the Navy. Navy Day is celebrated on 8 September in commemoration of the Indo-Pakistani War of 1965.  - The President of Pakistan ( ), is the ceremonial head of state of Pakistan and a figurehead who represents the "unity of the Republic." The President holds the legal title "de jure" and is a civilian commander-in-chief of the Pakistan Armed Forces as per the constitution of Pakistan.  - Several nations observe or have observed a Navy Day to recognize their navy.  - The Arabian Sea is a region of the northern Indian Ocean bounded on the north by Pakistan and Iran, on the west by northeastern Somalia and the Arabian Peninsula, and on the east by India. Historically the sea has been known by other names including the Erythraean Sea and the Persian Sea. Its total area is and its maximum depth is . The Gulf of Aden is in the southwest, connecting the Arabian Sea to the Red Sea through the strait of Bab-el-Mandeb, and the Gulf of Oman is in the northwest, connecting it to the Persian Gulf.  - The Pakistan Armed Forces ("Musallah Afwaj-e-Pakistan") are the military forces of Pakistan. They are the sixth largest in the world in terms of active military personnel and the largest among Muslim countries. The armed forces comprise three main service branches  Army, Navy, and Air Force  together with a number of paramilitary forces and the Strategic Plans Division Force. Chain of command of the military is organized under the Chairman of Joint Chiefs of Staff Committee (JCSC) alongside chiefs of staff of the army, navy, and air force. All of the branches work together during operations and joint missions under the Joint Staff Headquarters (JS HQ).  - Naval warfare is combat in and on the sea, the ocean, or any other major body of water such as a large lake or wide river.  - From its modern interpretations to its antecedents when maritime nations would send young naval officer candidates to sea (e.g., see Outward Bound), sail training provides an unconventional and effective way of building many useful skills on and off the water.   - PNS Rah Naward is a sail training ship of the Pakistan Navy . She was commissioned in 2001 as Prince William for the Tall Ships Youth Trust and sold in 2010 to the Pakistan Navy and renamed Rah Naward ( `` Swift Mover '' ) . Rah Naward has the callsign ARNR and the IMO number 9222326 .  - The Indo-Pakistani War of 1965 was a culmination of skirmishes that took place between April 1965 and September 1965 between Pakistan and India. The conflict began following Pakistan's Operation Gibraltar, which was designed to infiltrate forces into Jammu and Kashmir to precipitate an insurgency against Indian rule. India retaliated by launching a full-scale military attack on West Pakistan. The seventeen-day war caused thousands of casualties on both sides and witnessed the largest engagement of armored vehicles and the largest tank battle since World War II. Hostilities between the two countries ended after a United Nations mandated ceasefire was declared following diplomatic intervention by the Soviet Union and the United States, and the subsequent issuance of the Tashkent Declaration. Much of the war was fought by the countries' land forces in Kashmir and along the border between India and Pakistan. This war saw the largest amassing of troops in Kashmir since the Partition of British India in 1947, a number that was overshadowed only during the 20012002 military standoff between India and Pakistan. Most of the battles were fought by opposing infantry and armoured units, with substantial backing from air forces, and naval operations. The war exposed Pakistan's inadequate standards of military training, its misguided selection of officers, poor command and control arrangements, poor intelligence gathering and bad intelligence procedures. In spite of these shortcomings, the Pakistan Army managed to fight the larger Indian Army. Many details of this war, like those of other Indo-Pakistani Wars, remain unclear.  - Tall Ships Youth Trust is a sail training organisation in the United Kingdom that currently owns and operates a two mast brig, the "Stavros S Niarchos", and four 22m/72 ft Challenger class racing yachts.   - The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a sovereign country in western Europe. Lying off the north-western coast of the European mainland, it includes the island of Great Britain (the name of which is also loosely applied to the whole country), the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another sovereign statethe Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-south-west, giving it the 12th-longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of , the UK is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 21st-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth most densely populated country in the European Union.  - Pakistan (or ), officially the Islamic Republic of Pakistan, is a federal parliamentary republic in South Asia on crossroads of Central Asia and Western Asia. It is the sixth-most populous country with a population exceeding 200 million people. It is the 36th largest country in the world in terms of area with an area covering . Pakistan has a coastline along the Arabian Sea and the Gulf of Oman in the south and is bordered by India to the east, Afghanistan to the west, Iran to the southwest and China in the far northeast respectively. It is separated from Tajikistan by Afghanistan's narrow Wakhan Corridor in the north, and also shares a maritime border with Oman.    Given the paragraphs above, decide what entity has the relation 'instance of' with 'brig'.
A:
pns rah naward