instruction:
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.
question:
Context : Henry J. Muller, Jr. (born 1917) is a retired American soldier who served during World War II in the United States Army with the 11th Airborne Division between 1944 and 1945. 
Question : What war or battle involved Henry J. Muller?
answer:
conflict


question:
Context : NGC 147 is a member of the Local group of galaxies and a satellite galaxy of the Andromeda Galaxy (M31). 
Question : The star NGC 147 is a part of the constellation named what?
answer:
constellation


question:
Context : Service Modeling Language (SML) and Service Modeling Language Interchange Format (SML-IF) are a pair of XML-based specifications created by leading information technology companies that define a set of XML instance document extensions for expressing links between elements, a set of XML Schema extensions for constraining those links, and a way to associate Schematron rules with global element declarations, global complex type definitions, and/or model documents. 
Question : The Service Modeling Language is based upon what?
answer:

based on