Task: Text to Code
Input (English): select the rows whose first elected record is equal to 1958 . there is only one such row in the table . the incumbent record of this unqiue row is del latta .
Output (English): and { only { filter_eq { all_rows ; first elected ; 1958 } } ; eq { hop { filter_eq { all_rows ; first elected ; 1958 } ; incumbent } ; del latta } }