Question: when did shawn mendes go on tour with austin mahone
[{'answer': '2014', 'provenance': [{'wikipedia_id': '42198936', 'title': 'Shawn Mendes', 'start_paragraph_id': 2, 'start_character': 42, 'end_paragraph_id': 2, 'end_character': 46, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '42198936', 'title': 'Shawn Mendes', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 840, 'bleu_score': 0.5966961466474451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10376089633420093510}, 'section': 'Section::::Career.:2013—2015: "Handwritten".\n'}]}]