Question: which president nominated the most supreme court justices
[{'answer': 'George Washington', 'provenance': [{'wikipedia_id': '3951896', 'title': 'List of nominations to the Supreme Court of the United States', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 17, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]