Question: when did the black civil rights movement start
[{'answer': 'Between 1955 and 1968', 'provenance': [{'wikipedia_id': '49001', 'title': 'Civil rights movement', 'start_paragraph_id': 2, 'start_character': 594, 'end_paragraph_id': 2, 'end_character': 615, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '49001', 'title': 'Civil rights movement', 'start_paragraph_id': 2, 'start_character': 592, 'end_paragraph_id': 2, 'end_character': 1610, 'bleu_score': 0.7643291767241731, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8002033326433585391}, 'section': 'Section::::Abstract.'}]}]