TASK DEFINITION: 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.
PROBLEM: 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?

SOLUTION: series

PROBLEM: Context : Magnus von Eberhardt was born on 6 December 1855 in Berlin. 
Question : What was the award received by Magnus von Eberhardt?

SOLUTION: award received

PROBLEM: Context : Lord Guildford Dudley was the second youngest surviving son of John Dudley, 1st Duke of Northumberland, and his wife, Jane Guildford. 
Question : What is Lord Guildford Dudley's spouse's name?

SOLUTION:
spouse