Question: What is the parent organization of the United States Secret Service and where is their headquarters located?
Paraphrase: What is the father or mother agency of the United States Secret Service and the place is their headquarters located?
SPARQL (Wikidata): SELECT ?ans_1 ?ans_2 WHERE { wd:Q503224 wdt:P159 ?ans_1 . wd:Q503224 wdt:P749 ?ans_2 }
Answer: Washington, D.C., United States Department of Homeland Security