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.
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Question: Context : Chen Shaoguo (simplified Chinese: 陈绍果; traditional Chinese: 陳紹果; pinyin: Chén Shàoguǒ; born January 20, 1971) is a retired male race walker from PR China. 
Question : Which gender does Chen Shaoguo belong to?

Answer: sex or gender


Question: Context : Knights of Xentar is a humorous JRPG eroge (meaning it has erotic content). 
Question : To which series does Knights of Xentar belong?

Answer: series


Question: Context : Bullets Over Summer is a 1999 Hong Kong action film directed by Wilson Yip and starring Francis Ng and Louis Koo. 
Question : Which place does Bullets Over Summer exist in?

Answer:
narrative location