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.

Example 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?
Example Output: series

Example Input: Context : François-André Baudin fell ill and was left behind on île de France in April 1801. 
Question : When was François-André Baudin's death?
Example Output: date of death

Example Input: Context : The Levavasseur project was an early project for a tank designed in 1903 by the French Captain Levavasseur of the 6th Artillery Battalion, described as a ``automobile cannon project'' (French: Projet de canon autopropulseur). 
Question : What year did Levavasseur project come into use?
Example Output:
service entry