Question: During what war was the father of the Princess who was married to two men, one being a London based Dutch artist?
{'answer': 'World War II', 'supporting_facts': [['Princess Christina Margarethe of Hesse', 0], ['Princess Christina Margarethe of Hesse', 1], ['Princess Christina Margarethe of Hesse', 2], ['Prince Christoph of Hesse', 0], ['Prince Christoph of Hesse', 1]]}