query: select avg(horsepower) from cars_data where year  <  1980;
question: What-all is the average horsepower for all produced 1980 cars?
query_toks: select avg ( horsepower ) from cars_data where year < 1980 ;
query_toks_no_value: select avg ( horsepower ) from cars_data where year < value
question_toks: What-all is the average horsepower for all produced 1980 cars?