eq { diff { hop { filter_eq { all_rows ; year ; 1976 } ; points } ; hop { filter_eq { all_rows ; year ; 1975 } ; points } } ; 6 points } = true
select the rows whose year record fuzzily matches to 1976 . take the points record of this row . select the rows whose year record fuzzily matches to 1975 . take the points record of this row . the first record is 6 points larger than the second record .