Classify the relation of question with context to one of these categories: 1) award received, 2) based on, collection, 3) conflict, 4) constellation, 5) convicted of, 6) date of death, 7) director, 8) drafted by, 9) educated at, 10) medical condition, 11) military branch, 12) narrative location, 13) occupation, 14) original network, 15) parent company, 16) point in time, 17) production company, 18) residence, 19) series, 20) service entry, 21) sex or gender, 22) spouse, 23) standards body question.

Context : Horror of Fang Rock was a late replacement for the scripts Terrance Dicks had originally submitted, a vampire-based tale entitled The Vampire Mutations, which was cancelled close to production as it was feared it could detract from the BBC's Count Dracula a high-profile adaptation of Bram Stoker's classic novel Dracula, which was due for transmission close to when the serial would have aired. 
Question : Which series was Horror of Fang Rock in?
series

Context : Russian writer Mikhail Bulgakov wrote a semi-fictitious biography-tribute to Molière, titled Life of Mr. de Molière. 
Question : What is Molière's spouse's name?
spouse

Context : The film's distribution was handled by Wunderbar Films; it was sold for ₹250 million for Tamil Nadu (combined with Dhanush's Velaiyilla Pattathari) and overseas rights (including in the United States) were sold for ₹10 million, which is very high for Sivakarthikeyan's career; by comparison, Kaaki Sattai made ₹ crore in total. 
Question : What production company or companies created Kaaki Sattai?

production company