Question: who is the star of the movie wonder
[{'answer': 'Julia Roberts', 'provenance': [{'wikipedia_id': '51295486', 'title': 'Wonder (film)', 'start_paragraph_id': 1, 'start_character': 86, 'end_paragraph_id': 1, 'end_character': 99, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Owen Wilson', 'provenance': [{'wikipedia_id': '51295486', 'title': 'Wonder (film)', 'start_paragraph_id': 1, 'start_character': 101, 'end_paragraph_id': 1, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Jacob Tremblay', 'provenance': [{'wikipedia_id': '51295486', 'title': 'Wonder (film)', 'start_paragraph_id': 1, 'start_character': 114, 'end_paragraph_id': 1, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]