Task: Code to Text
Input (English): and { only { filter_eq { all_rows ; laps ; 39 } } ; eq { hop { filter_eq { all_rows ; laps ; 39 } ; year } ; 1949 } } = true
Output (English): select the rows whose laps record is equal to 39 . there is only one such row in the table . the year record of this unqiue row is 1949 .