Question: who sings never going to give you up never going to let you down
[{'answer': 'Rick Astley', 'provenance': [{'wikipedia_id': '5472903', 'title': 'Never Gonna Give You Up', 'start_paragraph_id': 1, 'start_character': 78, 'end_paragraph_id': 1, 'end_character': 89, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5472903', 'title': 'Never Gonna Give You Up', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 581, 'bleu_score': 0.957165036755604, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7862579409552124913}, 'section': 'Section::::Abstract.'}]}]