query: SELECT COUNT (DISTINCT ID) FROM teaches WHERE semester  =  'Spring' AND YEAR  =  2010
question: How many instructors teach a course in the Spring of 2010?
query_toks: SELECT COUNT ( DISTINCT ID ) FROM teaches WHERE semester = 'Spring ' AND YEAR = 2010
query_toks_no_value: select count ( distinct id ) from teaches where semester = value and year = value
question_toks: How many instructors teach a course in the Spring of 2010?