Question: who sang once upon a dream at the end of maleficent
[{'answer': 'Lana Del Rey', 'provenance': [{'wikipedia_id': '36967297', 'title': 'Once Upon a Dream (Sleeping Beauty song)', 'start_paragraph_id': 7, 'start_character': 11, 'end_paragraph_id': 7, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Notable covers.\n'}]}, {'provenance': [{'wikipedia_id': '36967297', 'title': 'Once Upon a Dream (Sleeping Beauty song)', 'start_paragraph_id': 8, 'start_character': 0, 'end_paragraph_id': 8, 'end_character': 430, 'bleu_score': 0.905022047196384, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7767404883416014800}, 'section': 'Section::::Notable covers.:Lana Del Rey version.\n'}]}, {'provenance': [{'wikipedia_id': '36967297', 'title': 'Once Upon a Dream (Sleeping Beauty song)', 'section': 'Section::::Notable covers.:Lana Del Rey version.\n', 'start_paragraph_id': 8, 'end_paragraph_id': 8, 'meta': {'evidence_span': ['"Once Upon a Dream" was covered by American singer and songwriter Lana Del Rey', '"Once Upon a Dream" was covered by American singer and songwriter Lana Del Rey for the dark fantasy film "Maleficent" (2014), which serves as a prequel to and re-imagining of the original "Sleeping Beauty".', 'for the Platinum Edition release of the film. Osment\'s rendition was included in the 2008 compilation album "Princess Disneymania". In 2014, a remix of the song by TRiON was released as a part of Walt Disney Records\' album, Dconstructed. "On']}}]}, {'provenance': [{'wikipedia_id': '36127934', 'title': 'Maleficent (film)', 'section': 'Section::::Music.\n', 'start_paragraph_id': 41, 'end_paragraph_id': 41, 'meta': {'evidence_span': ['it was announced that recording artist Lana Del Rey would be covering the song "Once Upon a Dream", f', 'James Newton Howard was hired to score the film in October 2012. On January 23, 2014, it was announced that recording artist Lana Del Rey would be covering the song "Once Upon a Dream", from the 1959 film "Sleeping Beauty" as the title song for "Maleficent". The song "Once Upon a Dream" is based on the Grand Waltz from ballet "Sleeping Beauty" written by Russian composer Tchaikovsky. Del Rey was handpicked by Angelina Jolie to perform the song. The single was released on January 26 and was made available for free for a limited time through Google Play. The film was originally slated for a', 'James Newton Howard was hired to score the film in October 2012. On January 23, 2014, it was announced that recording artist Lana Del Rey would be covering the song "Once Upon a Dream", from the 1959 film "Sleeping Beauty" as the title song for "Maleficent". The song "Once Upon a Dream" is base']}}]}, {'provenance': [{'wikipedia_id': '2287636', 'title': 'Sleeping Beauty (1959 film)', 'section': 'Section::::Production.:Music.\n', 'start_paragraph_id': 65, 'end_paragraph_id': 65, 'meta': {'evidence_span': ['"Once Upon a Dream" was covered by Toshiyuki Morikawa. In anticipation of the 2014 film "Maleficent", a cover version sung by Lana Del Rey was released by Disney on January 26.', 'DVD and Blu-ray Disc. In the 2012 album "Disney\xa0 Koe no Oujisama", which features various Japanese voice actors covering Disney songs, "Once Upon a Dream" was covered by Toshiyuki Morikawa. In anticipation of the 2014 film "Maleficent", a cover v']}}]}]