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.

Input: Consider Input: Context : Preparing for a Fancy Dress Ball shows Williams-Wynn's daughters, Charlotte and Mary, in lavish Italian-style costume: 
Question : What is the name of the place where Preparing for a Fancy Dress Ball can be found?

Output: collection


Input: Consider Input: Context : Peter Cheeseman died on 27 April 2010 of inanition and vascular dementia, after a long battle with Parkinson's disease. 
Question : What disease did Peter Cheeseman contract?

Output: medical condition


Input: Consider Input: Context : XPL was designed in 1967 as a way to teach compiler design principles and as starting point for students to build compilers for their own languages. 
Question : Which is the basis of XPL?


Output: based on