Question: what is the age of supreme court justices
[{'answer': '62', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 56, 'start_character': 431, 'end_paragraph_id': 56, 'end_character': 433, 'bleu_score': 1.0, 'section': 'Section::::Membership.:Court demographics.\n'}]}, {'answer': '81', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 36, 'start_character': 9, 'end_paragraph_id': 36, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Composition.:Appointment and confirmation.\n'}]}, {'answer': '69', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 2, 'start_character': 33, 'end_paragraph_id': 2, 'end_character': 35, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '84'}, {'answer': '79', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 9, 'start_character': 83, 'end_paragraph_id': 9, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'answer': '67', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 28, 'start_character': 262, 'end_paragraph_id': 28, 'end_character': 264, 'bleu_score': 1.0, 'section': 'Section::::Composition.:Size of the court.\n'}]}, {'answer': '63', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 27, 'start_character': 544, 'end_paragraph_id': 27, 'end_character': 546, 'bleu_score': 1.0, 'section': 'Section::::Composition.:Size of the court.\n'}]}, {'answer': '57', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 152, 'start_character': 99, 'end_paragraph_id': 152, 'end_character': 101, 'bleu_score': 1.0, 'section': 'Section::::Criticism.:Failing to protect individual rights.\n'}]}, {'answer': '50', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 74, 'start_character': 651, 'end_paragraph_id': 74, 'end_character': 653, 'bleu_score': 1.0, 'section': 'Section::::Membership.:Judicial leanings.\n'}]}]