query: SELECT count(DISTINCT program_id) FROM broadcast WHERE time_of_day  =  'Night'
question: How many distinct programs are broadcasted at "Night" times?
query_toks: SELECT count ( DISTINCT program_id ) FROM broadcast WHERE time_of_day = 'Night '
query_toks_no_value: select count ( distinct program_id ) from broadcast where time_of_day = value
question_toks: How many distinct programs are broadcasted at "Night" times?