Task: Code to Text
Input (English): and { only { filter_eq { all_rows ; surface ; clay } } ; eq { hop { filter_eq { all_rows ; surface ; clay } ; date } ; 10 april 2011 } } = true
Output (English): select the rows whose surface record fuzzily matches to clay . there is only one such row in the table . the date record of this unqiue row is 10 april 2011 .