Question: when did the twenty one pilots hiatus start
[{'answer': 'July 2017', 'provenance': [{'wikipedia_id': '38337784', 'title': 'Twenty One Pilots', 'start_paragraph_id': 41, 'start_character': 409, 'end_paragraph_id': 41, 'end_character': 418, 'bleu_score': 1.0, 'section': 'Section::::History.:2015–2017: "Blurryface".\n'}]}, {'answer': 'November 2016', 'provenance': [{'wikipedia_id': '38337784', 'title': 'Twenty One Pilots', 'start_paragraph_id': 41, 'start_character': 44, 'end_paragraph_id': 41, 'end_character': 57, 'bleu_score': 1.0, 'section': 'Section::::History.:2015–2017: "Blurryface".\n'}]}, {'provenance': [{'wikipedia_id': '38337784', 'title': 'Twenty One Pilots', 'start_paragraph_id': 41, 'start_character': 0, 'end_paragraph_id': 41, 'end_character': 520, 'bleu_score': 0.884192309730326, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6660540821210362689}, 'section': 'Section::::History.:2015–2017: "Blurryface".\n'}]}, {'provenance': [{'wikipedia_id': '38337784', 'title': 'Twenty One Pilots', 'section': 'Section::::History.:2015–2017: "Blurryface".\n', 'start_paragraph_id': 41, 'end_paragraph_id': 41, 'meta': {'evidence_span': ['in November 2016, Twenty One Pilots stated', "The band's last activity came in July 2017 in the form of posts on social media depicting an eye closing over lyrics from several of their songs.", 'in November 2016, Twenty One Pilots stated that after their last show, they will be "going dark" to focus on new music. Joseph stated that he would like to focus on lyrical content of the music, and bring the music back to the "authenticity, lyrics, delivery, and fearlessness of songwriting" similar to that of the self-titled album. The band\'s last activity came in July 2017 in the form of posts on social media depicting an eye closing over lyrics from several of their songs.']}}]}]