Question: who appointed the current justices of the supreme court
[{'answer': 'George W. Bush', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 34, 'start_character': 268, 'end_paragraph_id': 34, 'end_character': 282, 'bleu_score': 1.0, 'section': 'Section::::Composition.:Appointment and confirmation.\n'}]}, {'answer': 'Bill Clinton'}, {'answer': 'Barack Obama', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 33, 'start_character': 827, 'end_paragraph_id': 33, 'end_character': 839, 'bleu_score': 1.0, 'section': 'Section::::Composition.:Appointment and confirmation.\n'}]}, {'answer': 'Donald Trump', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 33, 'start_character': 486, 'end_paragraph_id': 33, 'end_character': 498, 'bleu_score': 1.0, 'section': 'Section::::Composition.:Appointment and confirmation.\n'}]}, {'answer': 'George H.W. Bush'}]