query: SELECT Name FROM scientists WHERE ssn NOT IN (SELECT scientist FROM AssignedTo)
question: Of scientists who are not assigned to any project Find name.
query_toks: SELECT Name FROM scientists WHERE ssn NOT IN ( SELECT scientist FROM AssignedTo )
query_toks_no_value: select name from scientists where ssn not in ( select scientist from assignedto )
question_toks: Of scientists who are not assigned to any project Find name.