what is the number of enrollment of the central institution?
CREATE TABLE table_20887670_1 (enrollment VARCHAR, institution VARCHAR)
SELECT enrollment FROM table_20887670_1 WHERE institution = "Central"
### Context: CREATE TABLE table_20887670_1 (enrollment VARCHAR, institution VARCHAR) ### Question: what is the number of enrollment of the central institution? ### Answer: SELECT enrollment FROM table_20887670_1 WHERE institution = "Central"