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.

Ex 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?

Ex Output:
parent company


Ex Input:
Context : Darren Tillis (born February 23, 1960) is a retired American professional basketball player who was selected by the Boston Celtics in the 1st round (23rd overall) of the 1982 NBA Draft. 
Question : Player Darren Tillis played for which team?

Ex Output:
drafted by


Ex Input:
Context : One science fiction scholar points out that Planet of Exile, along with Rocannon's World and City of Illusions exhibits Le Guin's struggle as an emerging writer to arrive at a plausible, uniquely memorable and straightforward locale for her stories. 
Question : What series is Planet of Exile part of?

Ex Output:

series