less { hop { filter_eq { all_rows ; team ; aermacchi } ; year } ; hop { filter_eq { all_rows ; team ; harley davidson } ; year } } = true
select the rows whose team record fuzzily matches to aermacchi . take the year record of this row . select the rows whose team record fuzzily matches to harley davidson . take the year record of this row . the first record is less than the second record .