Simplify the following text for a Grade 12 native English-speaking person.
Original: Gimnasia had to abandon its original field at the corner of 13th and 71st streets , in 1905 , because in that place the city had to build an educational institution ; at that time , it chose to discontinue the practice of football and to devote the club mainly to social activities .
Simplified: Gimnasia had to abandon its original field at the corner of 13th and 71st streets , in 1905 ; at that time , it chose to discontinue the practice of football and to devote the club mainly to social activities .