Task: Code to Text
Input (English): and { only { filter_eq { all_rows ; map colour ; black } } ; eq { hop { filter_eq { all_rows ; map colour ; black } ; name } ; northern line } } = true
Output (English): select the rows whose map colour record fuzzily matches to black . there is only one such row in the table . the name record of this unqiue row is northern line .