Teacher:In this task, you are given a context, a subject, a relation, and many options. Based on the context, from the options select the object entity that has the given relation with the subject. Answer with text (not indexes).
Teacher: Now, understand the problem? Solve this instance: Context: Chile, officially the Republic of Chile, is a South American country occupying a long, narrow strip of land between the Andes to the east and the Pacific Ocean to the west. It borders Peru to the north, Bolivia to the northeast, Argentina to the east, and the Drake Passage in the far south. Chilean territory includes the Pacific islands of Juan Fernández, Salas y Gómez, Desventuradas, and Easter Island in Oceania. Chile also claims about of Antarctica, although all claims are suspended under the Antarctic Treaty., Artillery is a class of large military weapons built to fire munitions far beyond the range and power of infantry's small arms. Early artillery development focused on the ability to breach fortifications, and led to heavy, fairly immobile siege engines. As technology improved, lighter, more mobile field artillery developed for battlefield use. This development continues today; modern self-propelled artillery vehicles are highly mobile weapons of great versatility providing the largest share of an army's total firepower., Latin America is a group of countries and dependencies in the Americas where Romance languages are predominant. The term originated in 19th century France as "Amérique latine" to consider French-speaking territories in the Americas (Haiti, French Guiana, Martinique, Guadeloupe, Saint Martin, Saint Barthélemy) along with the larger group of countries where Spanish and Portuguese languages prevailed. It is therefore broader than the terms Ibero-America or Hispanic Americathough it usually excludes French Canada and modern French Louisiana., An aircraft is a machine that is able to fly by gaining support from the air. It counters the force of gravity by using either static lift or by using the dynamic lift of an airfoil, or in a few cases the downward thrust from jet engines., South America is a continent located in the western hemisphere, mostly in the southern hemisphere, with a relatively small portion in the northern hemisphere. It is also considered a subcontinent of the Americas, which is the model used in nations that speak Romance languages. The reference to South America instead of other regions (like Latin America or the Southern Cone) has increased in the last decades due to changing geopolitical dynamics (in particular, the rise of Brazil)., A multiple rocket launcher (MRL) or multiple launch rocket system (MLRS) is a type of rocket artillery system. 
Rockets have different capabilities than artillery, like longer range, and different payloads, typically considerably larger warheads than a similarly sized artillery platform, or multiple warheads.
Unguided rocket artillery is notoriously inaccurate and slow to reload, compared to artillery. To overcome this, rockets are combined in systems that can launch multiple rockets simultaneously. 
Modern rockets can use GPS or inertial guidance, to combine the advantages of rockets with high accuracy., ASTROS II ( Artillery SaTuration ROcket System ) is a self - propelled multiple rocket launcher produced in Brazil by the Avibras company . It features modular design and employs rockets with calibers ranging from 127 mm to 300 mm. It was developed on the basis of a Tectran VBT - 2028 6 × 6 all - terrain vehicle for enhanced mobility ., Brazil, officially the Federative Republic of Brazil, is the largest country in both South America and Latin America. As the world's fifth-largest country by both area and population, it is the largest country to have Portuguese as an official language and the only one in the Americas. Bounded by the Atlantic Ocean on the east, Brazil has a coastline of . It borders all other South American countries except Ecuador and Chile and covers 47.3% of the continent's land area. Its Amazon River basin includes a vast tropical forest, home to diverse wildlife, a variety of ecological systems, and extensive natural resources spanning numerous protected habitats. This unique environmental heritage makes Brazil one of 17 megadiverse countries, and is the subject of significant global interest and debate regarding deforestation and environmental protection., A rocket (from Italian "rocchetto" "bobbin") is a missile, spacecraft, aircraft or other vehicle that obtains thrust from a rocket engine. Rocket engine exhaust is formed entirely from propellant carried within the rocket before use. Rocket engines work by action and reaction and push rockets forward simply by expelling their exhaust in the opposite direction at high speed, and can therefore work in the vacuum of space., Avibras Indústria Aeroespacial is a diversified Brazilian company which designs, develops and manufactures defense products and services. Its range of products encompasses artillery and aircraft defense systems, rockets and missiles such as air-to-ground and surface-to-surface weapon systems, including artillery saturation rocket systems; 70 mm air-to-ground systems and fiber optic multi-purpose guided missiles. It makes armoured vehicles as well., Ecuador, officially the Republic of Ecuador (which literally translates as "Republic of the Equator"), is a representative democratic republic in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean to the west. Ecuador also includes the Galápagos Islands in the Pacific, about west of the mainland., The megadiverse countries are a group of countries that harbor the majority of Earth's species and high numbers of endemic species. Conservation International identified 17 megadiverse countries in 1998. Many of them are located in, or partially in, tropical or subtropical regions., Rocket artillery is a type of artillery equipped with rocket launchers instead of conventional guns or mortars., Subject: astros ii mlrs, Relation: instance_of, Options: (A) action (B) aircraft (C) area (D) army (E) artillery (F) brazil (G) century (H) class (I) company (J) conservation (K) continent (L) country (M) direction (N) engine (O) fiber (P) field artillery (Q) force (R) gps (S) group (T) harbor (U) language (V) machine (W) military (X) missile (Y) model (Z) population ([) range (\) representative (]) republic (^) river (_) rocket (`) rocket artillery (a) rocket launcher (b) romance (c) share (d) siege (e) spacecraft (f) subcontinent (g) surface (h) system (i) term (j) territory (k) weapon
Student:
rocket artillery