Question: who was the king of england when winston churchill was prime minister
[{'answer': 'George VI', 'provenance': [{'wikipedia_id': '33265', 'title': 'Winston Churchill', 'start_paragraph_id': 98, 'start_character': 864, 'end_paragraph_id': 98, 'end_character': 873, 'bleu_score': 1.0, 'section': 'Section::::First term as prime minister: 1940–1945.:"We shall never surrender".\n'}]}]