Question: when was the civil rights act of 1866 passed
[{'answer': 'April 9 , 1866', 'provenance': [{'wikipedia_id': '632091', 'title': 'Civil Rights Act of 1866', 'start_paragraph_id': 1, 'start_character': 40, 'end_paragraph_id': 1, 'end_character': 54, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '632091', 'title': 'Civil Rights Act of 1866', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 627, 'bleu_score': 0.719822109409007, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10963746214737050256}, 'section': 'Section::::Abstract.'}]}]