Question: who is opening for green day tour 2017
[{'answer': 'Dog Party', 'provenance': [{'wikipedia_id': '51530700', 'title': 'Revolution Radio Tour', 'start_paragraph_id': 17, 'start_character': 12, 'end_paragraph_id': 17, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Opening acts.\n'}]}, {'answer': 'Jesse Malin', 'provenance': [{'wikipedia_id': '51530700', 'title': 'Revolution Radio Tour', 'start_paragraph_id': 18, 'start_character': 12, 'end_paragraph_id': 18, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Opening acts.\n'}]}, {'answer': 'The Interrupters', 'provenance': [{'wikipedia_id': '51530700', 'title': 'Revolution Radio Tour', 'start_paragraph_id': 19, 'start_character': 12, 'end_paragraph_id': 19, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Opening acts.\n'}]}, {'answer': 'Against Me !', 'provenance': [{'wikipedia_id': '51530700', 'title': 'Revolution Radio Tour', 'start_paragraph_id': 20, 'start_character': 12, 'end_paragraph_id': 20, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Opening acts.\n'}]}, {'answer': 'Rancid', 'provenance': [{'wikipedia_id': '51530700', 'title': 'Revolution Radio Tour', 'start_paragraph_id': 21, 'start_character': 12, 'end_paragraph_id': 21, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Opening acts.\n'}]}, {'answer': 'Catfish and the Bottlemen', 'provenance': [{'wikipedia_id': '51530700', 'title': 'Revolution Radio Tour', 'start_paragraph_id': 22, 'start_character': 12, 'end_paragraph_id': 22, 'end_character': 37, 'bleu_score': 1.0, 'section': 'Section::::Opening acts.\n'}]}]