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.

Ex Input:
Context : James Mitchell Varnum was born in Dracut, Massachusetts. 
Question : What military organization did James Mitchell Varnum belong to?

Ex Output:
military branch


Ex Input:
Context : Francis Heaulme (born February 25, 1959 at Metz) is a French serial killer dubbed the ``Criminal Backpacker''. 
Question : Which crime led to the conviction of Francis Heaulme?

Ex Output:
convicted of


Ex Input:
Context : Directed by Tom Cherones, ``The Ex-Girlfriend'' was the first episode of the show filmed at CBS Studio Center in Los Angeles, California, the previous season having been filmed at Desilu Cahuenga in Hollywood. 
Question : What series is The Ex-Girlfriend from?

Ex Output:

series