less { hop { filter_eq { all_rows ; athlete ; philomena mensah } ; time } ; hop { filter_eq { all_rows ; athlete ; marita koch } ; time } } = true
select the rows whose athlete record fuzzily matches to philomena mensah . take the time record of this row . select the rows whose athlete record fuzzily matches to marita koch . take the time record of this row . the first record is less than the second record .