query: select distinct year from cars_data where weight between 3000 and 4000;
question: In which years cars was a-produced weighing no less than 3000 and no more than 4000?
query_toks: select distinct year from cars_data where weight between 3000 and 4000 ;
query_toks_no_value: select distinct year from cars_data where weight between value and value
question_toks: In which years cars was a-produced weighing no less than 3000 and no more than 4000?