less { hop { filter_eq { all_rows ; record company ; rca } ; year of recording } ; hop { filter_eq { all_rows ; record company ; abc classics } ; year of recording } } = true
select the rows whose record company record fuzzily matches to rca . take the year of recording record of this row . select the rows whose record company record fuzzily matches to abc classics . take the year of recording record of this row . the first record is less than the second record .