Question: what is a common theme of sandra cisnero's writing
[{'answer': 'Chicana literature', 'provenance': [{'wikipedia_id': '430374', 'title': 'Sandra Cisneros', 'start_paragraph_id': 1, 'start_character': 676, 'end_paragraph_id': 1, 'end_character': 694, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '430374', 'title': 'Sandra Cisneros', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 694, 'bleu_score': 0.9509503382229441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3823822400929126051}, 'section': 'Section::::Abstract.'}]}]