eq { diff { hop { filter_eq { all_rows ; year ; 1982 } ; prize money } ; hop { filter_eq { all_rows ; year ; 1983 } ; prize money } } ; 60000 } = true
select the rows whose year record fuzzily matches to 1982 . take the prize money record of this row . select the rows whose year record fuzzily matches to 1983 . take the prize money record of this row . the first record is 60000 larger than the second record .