query: SELECT nurse FROM on_call WHERE blockfloor  =  1 AND blockcode  =  1
question: Nurses one a call a block a floor 1 and a block a code 1? Are Telling us them name.
query_toks: SELECT nurse FROM on_call WHERE blockfloor = 1 AND blockcode = 1
query_toks_no_value: select nurse from on_call where blockfloor = value and blockcode = value
question_toks: Nurses one a call a block a floor 1 and a block a code 1? Are Telling us them name.