Question: who sings the christmas song mary did you know
[{'answer': 'Michael English', 'provenance': [{'wikipedia_id': '2859825', 'title': 'Mary, Did You Know?', 'start_paragraph_id': 1, 'start_character': 219, 'end_paragraph_id': 1, 'end_character': 234, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2859825', 'title': 'Mary, Did You Know?', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 620790007217956266}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2859825', 'title': 'Mary, Did You Know?', 'start_paragraph_id': 1, 'start_character': 74, 'end_paragraph_id': 1, 'end_character': 613, 'bleu_score': 0.704900657049042, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 620790007217956266}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2859825', 'title': 'Mary, Did You Know?', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Mary, Did You Know?" is a Christmas song addressing Mary, mother of Jesus, with lyrics written by Mark Lowry in 1984, and music written by Buddy Greene in 1991. It was originally recorded by Christian recording artist Michael English on his self-titled debut solo album in 1991. At the time, English and Lowry were members of the Gaither Vocal Band, and Greene was touring with them', 'It was originally recorded by Christian recording artist Michael English', '"Mary, Did You Know?" is a Christmas song addressing Mary, mother of Jesus, with lyrics written by Mark Lowry in 1984, and music written by Buddy Greene in 1991. It was originally recorded by Christian recording artist Michael English on his self-titled debut solo album in 1991.']}}]}]