TASK DEFINITION: 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.
PROBLEM: Context : The latest version has GTK+ support and a native Carbon port for Mac OS X. XEmacs has always had a very open development-environment, including anonymous CVS, later Mercurial access and publicly accessible development mailing-lists. 
Question : The XEmacs is based upon what?

SOLUTION: based on

PROBLEM: Context : MCA Records was an American-based record company owned by MCA Inc., which later gave way to the larger MCA Music Entertainment Group (now Universal Music Group), of which MCA Records was still part. 
Question : Which company is the parent company of MCA Records?

SOLUTION: parent company

PROBLEM: Context : NGC 1532 is also an outlying member of the Fornax Cluster 
Question : What is the constellation that NGC 1532 is a part of?

SOLUTION:
constellation