Question: when did the movie the post begin filming
[{'answer': 'May 30 , 2017', 'provenance': [{'wikipedia_id': '53404298', 'title': 'The Post (film)', 'start_paragraph_id': 46, 'start_character': 52, 'end_paragraph_id': 46, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.\n'}]}, {'answer': 'May 2017', 'provenance': [{'wikipedia_id': '53404298', 'title': 'The Post (film)', 'start_paragraph_id': 2, 'start_character': 48, 'end_paragraph_id': 2, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '53404298', 'title': 'The Post (film)', 'start_paragraph_id': 46, 'start_character': 0, 'end_paragraph_id': 46, 'end_character': 561, 'bleu_score': 0.979054689945215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6445409249640399728}, 'section': 'Section::::Production.:Filming.\n'}]}, {'provenance': [{'wikipedia_id': '53404298', 'title': 'The Post (film)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 286, 'bleu_score': 0.773097647752765, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6445409249640399728}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '53404298', 'title': 'The Post (film)', 'section': 'Section::::Abstract.', 'start_paragraph_id': 2, 'end_paragraph_id': 2, 'meta': {'evidence_span': ['Principal photography began in New York City in May 2017. The film premiered at the Newseum in Washington, D.C. on December 14, 2017, and went into limited release in the United States on December 22, 2017.', 'Principal photography began in New York City in May 2017. The film premiered at the Newseum in Washington, D.C. on December 14, 2017,', 'Principal photography began in New York City in May 2017. The film premiered at the Newseum in Washington, D.C. on December 14, 2017, and went into limited release in the United States on December 22, 2017. It entered wide release on January 12, 2018, and grossed $179 million worldwide.']}}]}]