Question: when did the samsung galaxy s6 come out
[{'answer': '10 April 2015', 'provenance': [{'wikipedia_id': '45544924', 'title': 'Samsung Galaxy S6', 'start_paragraph_id': 7, 'start_character': 160, 'end_paragraph_id': 7, 'end_character': 173, 'bleu_score': 1.0, 'section': 'Section::::Development.\n'}]}]