Question: when did daylight savings time first come into effect
[{'answer': 'April 30 , 1916', 'provenance': [{'wikipedia_id': '47548', 'title': 'Daylight saving time', 'start_paragraph_id': 25, 'start_character': 61, 'end_paragraph_id': 25, 'end_character': 84, 'bleu_score': 1.0, 'section': 'Section::::Politics.\n'}]}, {'provenance': [{'wikipedia_id': '47548', 'title': 'Daylight saving time', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 271, 'bleu_score': 0.8694217633836121, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6743427049700626261}, 'section': 'Section::::Abstract.'}]}]