Question: who has the power to remove a supreme court justice
[{'answer': 'Congress', 'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 5, 'start_character': 955, 'end_paragraph_id': 5, 'end_character': 963, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '31737', 'title': 'Supreme Court of the United States', 'start_paragraph_id': 42, 'start_character': 0, 'end_paragraph_id': 42, 'end_character': 852, 'bleu_score': 0.9855586187885531, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9769196362370064594}, 'section': 'Section::::Composition.:Tenure.\n'}]}]