Task: Code to Text
Input (English): and { only { filter_eq { all_rows ; won ; 16 } } ; eq { hop { filter_eq { all_rows ; won ; 16 } ; club } ; northampton saints ( sf ) } } = true
Output (English): select the rows whose won record is equal to 16 . there is only one such row in the table . the club record of this unqiue row is northampton saints  sf  .