Question: what percent of the senate is needed to confirm a supreme court justice
[{'answer': 'majority', 'provenance': [{'wikipedia_id': '24827215', 'title': 'Appointment and confirmation to the Supreme Court of the United States', 'start_paragraph_id': 2, 'start_character': 147, 'end_paragraph_id': 2, 'end_character': 155, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]