Question: who are the nine us supreme court justices
[{'answer': 'John Roberts'}, {'answer': 'Anthony Kennedy'}, {'answer': 'Clarence Thomas', 'provenance': [{'wikipedia_id': '216429', 'title': 'List of Justices of the Supreme Court of the United States', 'start_paragraph_id': 8, 'start_character': 323, 'end_paragraph_id': 8, 'end_character': 338, 'bleu_score': 1.0, 'section': 'Section::::All justices of the Supreme Court.\n'}]}, {'answer': 'Ruth Bader Ginsburg'}, {'answer': 'Stephen Breyer'}, {'answer': 'Samuel Alito'}, {'answer': 'Sonia Sotomayor'}, {'answer': 'Elena Kagan'}, {'answer': 'Neil Gorsuch'}]