Question: when was captain america the winter soldier filmed
[{'answer': '2013', 'provenance': [{'wikipedia_id': '36439749', 'title': 'Captain America: The Winter Soldier', 'start_paragraph_id': 2, 'start_character': 388, 'end_paragraph_id': 2, 'end_character': 392, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '36439749', 'title': 'Captain America: The Winter Soldier', 'start_paragraph_id': 38, 'start_character': 0, 'end_paragraph_id': 38, 'end_character': 661, 'bleu_score': 0.9812185674664711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 571162306476301917}, 'section': 'Section::::Production.:Filming.\n'}]}]