Detailed Instructions: 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).
Problem:Context: The University of Buenos Aires (UBA) is the largest university in Argentina and the second largest university by enrollment in Latin America. Founded on August 12, 1821 in the city of Buenos Aires, it consists of 13 departments, 6 hospitals, 10 museums and is linked to 4 high schools: Colegio Nacional de Buenos Aires, Escuela Superior de Comercio Carlos Pellegrini, Instituto Libre de Segunda Enseñanza and "Escuela de Educación Técnica Profesional en Producción Agropecuaria y Agroalimentaria"., A university ("a whole", "a corporation") is an institution of higher (or tertiary) education and research which grants academic degrees in various subjects. 
Universities typically provide undergraduate education and postgraduate education., Ricardo Rojas ( 16 September 1882 in Tucumán -- 29 July 1957 in Buenos Aires ) was an Argentine journalist and writer . He came from one of the most influential families of the Santiago del Estero Province ; his father was Absalón Rojas , who was governor of the province . He moved to Buenos Aires to further his education , later becoming rector of the University of Buenos Aires from 1926 to 1930 . He was also the director of the Institute of Petroleum ( see Yacimientos Petrolíferos Fiscales ) ., Colegio Nacional de Buenos Aires ("National School of Buenos Aires") is a public high school in Buenos Aires, Argentina. In the tradition of the European "gymnasium" it provides a free education that includes classical languages such as Latin and Greek. The school is one of the most prestigious in Argentina. Its alumni include many personalities, including two Nobel laureates and four Presidents of Argentina., Subject: ricardo rojas , Relation: educated_at, Options: (A) colegio nacional (B) colegio nacional de buenos aires (C) undergraduate education (D) university of buenos aires
Solution:
colegio nacional de buenos aires