query: SELECT max(weight) ,  petType FROM pets GROUP BY petType
question: Do Find the maximum weight for each type of pet. Do List the maximum weight and pet type.
query_toks: SELECT max ( weight ) , petType FROM pets GROUP BY petType
query_toks_no_value: select max ( weight ) , pettype from pets group by pettype
question_toks: Do Find the maximum weight for each type of pet. Do List the maximum weight and pet type.