Question: when did the war on drugs start in the philippines
[{'answer': 'July 1 , 2016', 'provenance': [{'wikipedia_id': '51032591', 'title': 'Philippine Drug War', 'start_paragraph_id': 80, 'start_character': 505, 'end_paragraph_id': 80, 'end_character': 518, 'bleu_score': 1.0, 'section': 'Section::::Operations.:Oplan HVT.\n'}]}]