Question: who was prime minister when the queen was crowned
[{'answer': 'Winston Churchill', 'provenance': [{'wikipedia_id': '718792', 'title': 'List of prime ministers of Elizabeth II', 'start_paragraph_id': 36, 'start_character': 0, 'end_paragraph_id': 36, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Prime ministers of current realms.:United Kingdom.\n'}]}, {'provenance': [{'wikipedia_id': '718792', 'title': 'List of prime ministers of Elizabeth II', 'start_paragraph_id': 36, 'start_character': 0, 'end_paragraph_id': 36, 'end_character': 100, 'bleu_score': 0.8702397637697911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14079662934265636267}, 'section': 'Section::::Prime ministers of current realms.:United Kingdom.\n'}]}]