Question: who was england's prime minister during ww1
[{'answer': 'H.H. Asquith'}, {'answer': 'David Lloyd George', 'provenance': [{'wikipedia_id': '1211527', 'title': 'History of the United Kingdom during the First World War', 'start_paragraph_id': 2, 'start_character': 719, 'end_paragraph_id': 2, 'end_character': 737, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1211527', 'title': 'History of the United Kingdom during the First World War', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 858, 'bleu_score': 0.9685451587663261, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12466278594245975616}, 'section': 'Section::::Abstract.'}]}]