greater { hop { filter_eq { all_rows ; womens singles ; li xuerui } ; year } ; hop { filter_eq { all_rows ; womens singles ; juliane schenk } ; year } } = true
select the rows whose womens singles record fuzzily matches to li xuerui . take the year record of this row . select the rows whose womens singles record fuzzily matches to juliane schenk . take the year record of this row . the first record is greater than the second record .