less { hop { filter_eq { all_rows ; men 's singles ; nicholas hall } ; year } ; hop { filter_eq { all_rows ; men 's singles ; andrew smith } ; year } } = true
select the rows whose men s singles record fuzzily matches to nicholas hall . take the year record of this row . select the rows whose men s singles record fuzzily matches to andrew smith . take the year record of this row . the first record is less than the second record .