less { hop { filter_eq { all_rows ; opponent ; daniela hantuchová } ; edition } ; hop { filter_eq { all_rows ; opponent ; kirsten flipkens } ; edition } } = true
select the rows whose opponent record fuzzily matches to daniela hantuchová . take the edition record of this row . select the rows whose opponent record fuzzily matches to kirsten flipkens . take the edition record of this row . the first record is less than the second record .