less { hop { filter_eq { all_rows ; school ; triton } ; year joined } ; hop { filter_eq { all_rows ; school ; oak hill } ; year joined } } = true
select the rows whose school record fuzzily matches to triton . take the year joined record of this row . select the rows whose school record fuzzily matches to oak hill . take the year joined record of this row . the first record is less than the second record .