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 : Lakmé is an opera in three acts by Léo Delibes to a French libretto by Edmond Gondinet and Philippe Gille. 
Question : The Lakmé is based upon what?
Example Output: based on

Example Input: Context : The Madonna Litta is a late 15th-century painting, traditionally attributed to Leonardo da Vinci, in the Hermitage Museum, Saint Petersburg. 
Question : What is the name of the place where Madonna Litta can be found?
Example Output: collection

Example Input: Context : NGC 2241 is an open cluster in the constellation Dorado. 
Question : What constellation does NGC 2241 belong to?
Example Output:
constellation