Task: Pos Tagging
Input (English): Sentence: John Lennon 's divorce followed , as well as his entering the world of black magic , as deeply as to buy the apartment . {{ where }} the " Rosemary 's baby " had been filmed , previous property of Roman Polansky , and in that same apartment John Lennon had a room upholstered with black silk where he used to do his black magic operations . 
Word: where
Output (English): WRB