Question: who sits on the most board of directors
[{'answer': 'Sam Nunn', 'provenance': [{'wikipedia_id': '3205187', 'title': 'List of people on multiple governing boards', 'start_paragraph_id': 3, 'start_character': 12, 'end_paragraph_id': 3, 'end_character': 20, 'bleu_score': 1.0, 'section': 'Section::::Seven boards.\n'}]}, {'answer': 'Kenneth Duberstein', 'provenance': [{'wikipedia_id': '3205187', 'title': 'List of people on multiple governing boards', 'start_paragraph_id': 4, 'start_character': 12, 'end_paragraph_id': 4, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Seven boards.\n'}]}, {'answer': 'Joshua Bekenstein', 'provenance': [{'wikipedia_id': '3205187', 'title': 'List of people on multiple governing boards', 'start_paragraph_id': 5, 'start_character': 12, 'end_paragraph_id': 5, 'end_character': 29, 'bleu_score': 1.0, 'section': 'Section::::Seven boards.\n'}]}, {'answer': 'Brian Mulroney', 'provenance': [{'wikipedia_id': '3205187', 'title': 'List of people on multiple governing boards', 'start_paragraph_id': 6, 'start_character': 12, 'end_paragraph_id': 6, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Seven boards.\n'}]}]