less { hop { filter_eq { all_rows ; opponent in the final ; christína papadáki } ; date } ; hop { filter_eq { all_rows ; opponent in the final ; julia vakulenko } ; date } } = true
select the rows whose opponent in the final record fuzzily matches to christína papadáki . take the date record of this row . select the rows whose opponent in the final record fuzzily matches to julia vakulenko . take the date record of this row . the first record is less than the second record .