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 : Francis Heaulme (born February 25, 1959 at Metz) is a French serial killer dubbed the ``Criminal Backpacker''. 
Question : Which crime led to the conviction of Francis Heaulme?
Example Output: convicted of

Example Input: Context : From 1976 to 1980, Gerd Langguth was a member of the Bundestag for the Christian Democratic Union. 
Question : What was the date of death of Gerd Langguth?
Example Output: date of death

Example Input: Context : Windows 10 was available in 190 countries and 111 languages upon its launch, and as part of efforts to ``re-engage'' with users in China, Microsoft also announced that it would partner with Qihoo and Tencent to help promote and distribute Windows 10 in China, and that Chinese PC maker Lenovo would provide assistance at its service centers and retail outlets for helping users upgrade to Windows 10. 
Question : The Windows 10 is based upon what?
Example Output:
based on