Question: who plays jackie kennedy in the movie jackie
[{'answer': 'Natalie Portman', 'provenance': [{'wikipedia_id': '48842785', 'title': 'Jackie (2016 film)', 'start_paragraph_id': 1, 'start_character': 113, 'end_paragraph_id': 1, 'end_character': 128, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '48842785', 'title': 'Jackie (2016 film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 388, 'bleu_score': 0.911178450725289, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11534176145179505811}, 'section': 'Section::::Abstract.'}]}]