query: SELECT nickname FROM Staff WHERE first_name = "Janessa" AND last_name = "Sawayn";
question: What is the nickname of the employee named Janessa Sawayn?
query_toks: SELECT nickname FROM Staff WHERE first_name = `` Janessa '' AND last_name = `` Sawayn '' ;
query_toks_no_value: select nickname from staff where first_name = value and last_name = value
question_toks: What is the nickname of the employee named Janessa Sawayn?