Question: average age of supreme court justices at appointment
[{'answer': 'about 53 years old', 'provenance': [{'wikipedia_id': '3047164', 'title': 'Demographics of the Supreme Court of the United States', 'start_paragraph_id': 103, 'start_character': 398, 'end_paragraph_id': 103, 'end_character': 416, 'bleu_score': 1.0, 'section': 'Section::::Age.\n'}]}, {'provenance': [{'wikipedia_id': '3047164', 'title': 'Demographics of the Supreme Court of the United States', 'start_paragraph_id': 103, 'start_character': 0, 'end_paragraph_id': 103, 'end_character': 416, 'bleu_score': 0.9277431284700741, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4640900718964801062}, 'section': 'Section::::Age.\n'}]}]