Question: what was the purpose of the montgomery improvement association
[{'answer': 'the Montgomery bus boycott', 'provenance': [{'wikipedia_id': '2781370', 'title': 'Montgomery Improvement Association', 'start_paragraph_id': 1, 'start_character': 259, 'end_paragraph_id': 1, 'end_character': 285, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2781370', 'title': 'Montgomery Improvement Association', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 423, 'bleu_score': 0.9684940092844061, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7285123753721694160}, 'section': 'Section::::Abstract.'}]}]