Question: who won men's singles in master grand gold tournament in 2017
[{'answer': 'Ng Ka Long', 'provenance': [{'wikipedia_id': '52599519', 'title': '2017 Malaysia Masters Grand Prix Gold', 'start_paragraph_id': 4, 'start_character': 13, 'end_paragraph_id': 4, 'end_character': 23, 'bleu_score': 1.0, 'section': "Section::::Men's singles.:Seeds.\n"}]}]