query: SELECT count(*) FROM institution WHERE institution_id NOT IN (SELECT institution_id FROM protein)
question: How institutions many do not having an a-associated proteins the record for us?
query_toks: SELECT count ( * ) FROM institution WHERE institution_id NOT IN ( SELECT institution_id FROM protein )
query_toks_no_value: select count ( * ) from institution where institution_id not in ( select institution_id from protein )
question_toks: How institutions many do not having an a-associated proteins the record for us?