query: select max(mpg) from cars_data where cylinders  =  8 or year  <  1980
question: What-all the maximum miles per gallon of car with 8 cylinder or produced before 1980?
query_toks: select max ( mpg ) from cars_data where cylinders = 8 or year < 1980
query_toks_no_value: select max ( mpg ) from cars_data where cylinders = value or year < value
question_toks: What-all the maximum miles per gallon of car with 8 cylinder or produced before 1980?