Question: when did the first guardians of the galaxy movie come out
[{'answer': 'August 1 , 2014', 'provenance': [{'wikipedia_id': '36450985', 'title': 'Guardians of the Galaxy (film)', 'start_paragraph_id': 29, 'start_character': 168, 'end_paragraph_id': 29, 'end_character': 183, 'bleu_score': 1.0, 'section': 'Section::::Production.:Development.\n'}]}, {'provenance': [{'wikipedia_id': '36450985', 'title': 'Guardians of the Galaxy (film)', 'start_paragraph_id': 3, 'start_character': 4, 'end_paragraph_id': 3, 'end_character': 659, 'bleu_score': 0.6515182868573911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12867149606474344772}, 'section': 'Section::::Abstract.'}]}]