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 : SpatiaLite is provided natively for Linux and Windows as a software library as well several utilities that incorporate the SpatiaLite library. 
Question : Which is the basis of SpatiaLite?
Example Output: based on

Example Input: Context : Virtutech was founded in 1998 as a spin-off from the Swedish Institute of Computer Science (SICS), in Stockholm, Sweden. 
Question : What company is Virtutech part of?
Example Output: parent company

Example Input: Context : The Boeing KC-767 is a military aerial refueling and strategic transport aircraft developed from the Boeing 767-200ER. 
Question : The Boeing KC-767 is based upon what?
Example Output:
based on