Question: who plays astrid how to train your dragon
[{'answer': 'America Ferrera', 'provenance': [{'wikipedia_id': '18394730', 'title': 'How to Train Your Dragon (film)', 'start_paragraph_id': 1, 'start_character': 418, 'end_paragraph_id': 1, 'end_character': 433, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18394730', 'title': 'How to Train Your Dragon (film)', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 72, 'bleu_score': 0.647912152509014, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6663607104651703407}, 'section': 'Section::::Cast.\n'}]}]