Question: who plays tris prior in the movie divergent
[{'answer': 'Shailene Diann Woodley', 'provenance': [{'wikipedia_id': '2331462', 'title': 'Shailene Woodley', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]