question: stalin:roosevelt:churchill
choices.label: A B C D
choices.text: mercury:venus:mars earth:country:region president:prime minister:official morality:ethics:morality
explanation: "churchill", "stalin" and "roosevelt" belonged to the top national leaders. "mars", "mercury" and "venus" are planets. there are many "countries" on "earth", and the "region" is a part of the "country". "president" and "prime minister" are both "official". from an academic point of view, people tend to regard the search for "moral" standards as "ethics".
relation: stalin roosevelt churchill R2.4
relation: mercury venus mars R2.4
relation: earth country R3.6
relation: country region R2.3
relation: president official R2.2
relation: prime minister official R2.2
relation: morality ethics R3.10