Question: who sang i guess that's why they call it the blues
[{'answer': 'Elton John', 'provenance': [{'wikipedia_id': '8954156', 'title': "I Guess That's Why They Call It the Blues", 'start_paragraph_id': 1, 'start_character': 72, 'end_paragraph_id': 1, 'end_character': 82, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8954156', 'title': "I Guess That's Why They Call It the Blues", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 329, 'bleu_score': 0.9008002778324501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1685149987643801043}, 'section': 'Section::::Abstract.'}]}]