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 : Glashütte Original is currently owned by The Swatch Group. 
Question : Which company is the parent company of Glashütte Original?
Example Output: parent company

Example Input: Context : NGC 2241 is an open cluster in the constellation Dorado. 
Question : What constellation does NGC 2241 belong to?
Example Output: constellation

Example Input: Context : The Cython programming language is a superset of Python with a foreign function interface for invoking C/C++ routines and the ability to declare the static type of subroutine parameters and results, local variables, and class attributes. 
Question : Which is the basis of Cython?
Example Output:
based on