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.

Q: Context : Sponsa de Libano (The Bride of Lebanon) is a painting by the Pre-Raphaelite artist Edward Burne-Jones dated 1891. 
Question : What is the name of the place where Sponsa de Libano can be found?

A: collection
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Q: 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?

A: based on
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Q: Context : A female French Legionnaire in the book Sowing Glory by P.C. Wren was referred to by the pseudonym of Mary Ambree in order to protect her identity. 
Question : What was the date of Mary Ambree?

A:
point in time
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