Question: when was the city of bombay improvement trust established
[{'answer': 'December 9 , 1898'}, {'provenance': [{'wikipedia_id': '4512582', 'title': 'Bombay City Improvement Trust', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 406, 'bleu_score': 0.9292740894187551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4374823450113701979}, 'section': 'Section::::Abstract.'}]}]