Question: who sings the skye boat song on outlander
[{'answer': 'Raya Yarbrough', 'provenance': [{'wikipedia_id': '990400', 'title': 'The Skye Boat Song', 'start_paragraph_id': 29, 'start_character': 96, 'end_paragraph_id': 29, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Recording history and covers.:21st Century.\n'}]}, {'answer': 'Bear McCreary', 'provenance': [{'wikipedia_id': '990400', 'title': 'The Skye Boat Song', 'start_paragraph_id': 29, 'start_character': 0, 'end_paragraph_id': 29, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Recording history and covers.:21st Century.\n'}]}, {'provenance': [{'wikipedia_id': '990400', 'title': 'The Skye Boat Song', 'start_paragraph_id': 29, 'start_character': 0, 'end_paragraph_id': 29, 'end_character': 225, 'bleu_score': 0.953991849837532, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1059596441561077359}, 'section': 'Section::::Recording history and covers.:21st Century.\n'}]}, {'provenance': [{'wikipedia_id': '990400', 'title': 'The Skye Boat Song', 'section': 'Section::::Recording history and covers.:21st Century.\n', 'start_paragraph_id': 29, 'end_paragraph_id': 29, 'meta': {'evidence_span': ['Bear McCreary adapted the song as the opening titles of the 2014 TV series "Outlander", sung by Raya Yarbrough, changing the text of Robert Louis Stevenson\'s poem "Sing Me a Song of a Lad That Is Gone" (1892) to fit the story.', 'Bear McCreary adapted the song as the opening titles of the 2014 TV series "Outlander", sung by Raya Yarbrough, changing the text of Robert Louis Stevenson\'s poem "Sing Me a Song of a Lad That Is Gone" (1892) to fit the story', 'Bear McCreary adapted the song as the opening titles of the 2014 TV series "Outlander", sung by Raya Yarbrough, changing the text of Robert Louis Stevenson\'s poem "Sing Me a Song of a Lad That Is Gone" (1892) to fit the story.']}}]}]