How many teams drafted players from the University of Maryland?
CREATE TABLE table_25518547_3 (mls_team VARCHAR, affiliation VARCHAR)
SELECT COUNT(mls_team) FROM table_25518547_3 WHERE affiliation = "University of Maryland"
### Context: CREATE TABLE table_25518547_3 (mls_team VARCHAR, affiliation VARCHAR) ### Question: How many teams drafted players from the University of Maryland? ### Answer: SELECT COUNT(mls_team) FROM table_25518547_3 WHERE affiliation = "University of Maryland"