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 : Sukhoi Company (JSC; Russian: ОАО ``Компания ''Сухой``) is a major Russian aircraft manufacturer, headquartered in Begovoy District, Northern Administrative Okrug, Moscow, and designs both civilian and military aircraft. 
Question : Which company is the parent company of Sukhoi?
Example Output: parent company

Example Input: Context : Hulda from Holland is a 1916 silent film produced by Famous Players Film Company and released by Paramount Pictures. 
Question : What production company or companies created Hulda from Holland?
Example Output: production company

Example Input: Context : In 2011, El Mariachi was inducted into the Library of Congress to be preserved as part of its National Film Registry for being culturally, historically, or aesthetically significant. 
Question : What series is the episode El Mariachi part of?
Example Output:
series