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.

Input: Consider Input: Context : After TUI UK merged with First Choice Holidays in September 2007, it became part of TUI Travel PLC. The new holiday company continued with both in-house airlines (Thomsonfly and First Choice Airways) through Winter 2007 and Summer 2008 until the two were merged on 1 November 2008 as Thomson Airways. 
Question : What is Thomsonfly's parent company?

Output: parent company


Input: Consider Input: Context : ``The Way We Weren't'' is the twentieth episode of The Simpsons' fifteenth season. 
Question : What series is The Way We Weren't part of?

Output: series


Input: Consider Input: Context : Pointe du Hoc (French pronunciation: ​(pwɛ̃t dy ɔk)) is a promontory with a 100 ft (30 m) cliff overlooking the English Channel on the coast of Normandy in northern France. 
Question : The date of Pointe du Hoc?


Output: point in time