Question: who signed the civil rights act of 1991
[{'answer': 'Bush', 'provenance': [{'wikipedia_id': '1507138', 'title': 'Civil Rights Act of 1991', 'start_paragraph_id': 2, 'start_character': 10, 'end_paragraph_id': 2, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1507138', 'title': 'Civil Rights Act of 1991', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 178, 'bleu_score': 0.9364250605898111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4990929675770032232}, 'section': 'Section::::Abstract.'}]}]