query: SELECT Name FROM technician WHERE technician_id NOT IN (SELECT technician_id FROM repair_assignment)
question: What-what being names technician what has ain't assigned for repair alla machine?
query_toks: SELECT Name FROM technician WHERE technician_id NOT IN ( SELECT technician_id FROM repair_assignment )
query_toks_no_value: select name from technician where technician_id not in ( select technician_id from repair_assignment )
question_toks: What-what being names technician what has ain't assigned for repair alla machine?