Question: who fought to organize farm workers in california
[{'answer': 'Cesar Chavez', 'provenance': [{'wikipedia_id': '68319', 'title': 'Cesar Chavez', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '68319', 'title': 'Cesar Chavez', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 466, 'bleu_score': 0.5789003021613941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1276366907631818479}, 'section': 'Section::::Abstract.'}]}]