Question: when did the son of bigfoot come out
[{'answer': '11 August 2017'}, {'provenance': [{'wikipedia_id': '53740929', 'title': 'The Son of Bigfoot', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 314, 'bleu_score': 0.544995697788455, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8029606636353908335}, 'section': 'Section::::Abstract.'}]}]