Question: who was the prime minister of great britain in 1956
[{'answer': 'Robert Anthony Eden', 'provenance': [{'wikipedia_id': '18949275', 'title': 'Anthony Eden', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18949275', 'title': 'Anthony Eden', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 246, 'bleu_score': 0.8559898693114281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10266401593768471628}, 'section': 'Section::::Abstract.'}]}]