Question: when did guiding light go off the air
[{'answer': 'September 18 , 2009', 'provenance': [{'wikipedia_id': '191599', 'title': 'Guiding Light', 'start_paragraph_id': 68, 'start_character': 30, 'end_paragraph_id': 68, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Broadcast history.\n'}]}, {'provenance': [{'wikipedia_id': '191599', 'title': 'Guiding Light', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 835, 'bleu_score': 0.850113375475068, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13135925999262867311}, 'section': 'Section::::Abstract.'}]}]