Question: when is the new tappan zee bridge supposed to be finished
[{'answer': 'June 15 , 2018', 'provenance': [{'wikipedia_id': '33536726', 'title': 'Tappan Zee Bridge (2017–present)', 'start_paragraph_id': 19, 'start_character': 69, 'end_paragraph_id': 19, 'end_character': 83, 'bleu_score': 1.0, 'section': 'Section::::Construction progress.:Completion.\n'}]}]