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.

Context : In 1935, Duncan Sandys married Diana Churchill, daughter of the future prime minister Winston Churchill. 
Question : What is Duncan Sandys's spouse's name?
spouse

Context : Salt Water Tabby was scored by Scott Bradley, produced by Fred Quimby, and directed and written by William Hanna and Joseph Barbera. 
Question : What is the series called that Salt Water Tabby belongs to?
series

Context : The Lacemaker (French: La Dentellière) is a 1977 French drama film directed by Claude Goretta and starring Isabelle Huppert and Yves Beneyton. 
Question : Which is the basis of The Lacemaker?

based on