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 : Years later, Russ Regan publicly disclosed his surprise and confusion that Dahlstrom's albums had not been high profile successes, saying, ``In my career there are two female singer/songwriters who I signed, that should've been stars, Patti Dahlstrom and Harriet Schock''. 
Question : Which sex is Patti Dahlstrom?

SOLUTION: sex or gender

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

SOLUTION: series

PROBLEM: Context : Since 1998, GSD&M has been part of the Omnicom Group. 
Question : Which company is the parent company of GSD&M?

SOLUTION:
parent company