Question: who performed the halftime show at super bowl 51
[{'answer': 'Lady Gaga', 'provenance': [{'wikipedia_id': '45280343', 'title': 'Super Bowl LI halftime show', 'start_paragraph_id': 1, 'start_character': 123, 'end_paragraph_id': 1, 'end_character': 132, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '45280343', 'title': 'Super Bowl LI halftime show', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 253, 'bleu_score': 0.68365988062297, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14605419538529964703}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '45280343', 'title': 'Super Bowl LI halftime show', 'section': 'Section::::Development.:Multimedia.\n', 'start_paragraph_id': 25, 'end_paragraph_id': 25, 'meta': {'evidence_span': ['Gaga', 'Both Rodgers and Bennett combined their ideas for the show, with input from Barnhart and special effects designer Mark Grega from FX. Rodgers described the stage setup as "the most intense technological and visually impactful epic possible". The show featured a field cast led by KP Terry; they used Glow Motion LED batons, creating a 3D moving pixel show. Glow Motion, a Nashville-based company, programmed each individual baton to sync with the music being played. "All our field cast and staging experts, technicians and vendors [had] stepped up to support the vision, and Gaga herself, having embraced the concept early on, [had] taken on the task with more interest and heart than any other artist that I\'ve worked with in the last 11 years," Rodgers concluded.']}}]}, {'provenance': [{'wikipedia_id': '45280343', 'title': 'Super Bowl LI halftime show', 'section': 'Section::::Development.:Fashion.\n', 'start_paragraph_id': 22, 'end_paragraph_id': 22, 'meta': {'evidence_span': ['Gaga', 'fantasy to her fans. She looked great. She sounded great. It\'s like she was playing football in heels." Gaga also wore a golden jacket which had shoulder spikes while playing the keytar, . Gaga\'sh longtime collaborator Brandon Maxwell styled her looks; singer David Bowie\'s persona Ziggy Stardust influenced her makeup. Donatella Versace flew to Houston to help with the costumes, including dressing the singer before the show. Sarah Nicole Tanno did Gaga\'s makeup, and Frederic Aspiras coiffed her hair. Tanno used products from Marc Jacobs\' cosmetics line to give Gaga a "timeless" look. The singer wore a pair of eye masks made of crystals, extending to her temples. According to Vanessa Friedman of "The New York Times" choosing Versace as her fashion brand for the costumes "helped to support a subtler, arguably more powerful, message" by Gaga. She had promised to make the show about "inclusion" and to that extent, using Versace and a number of other designers like Dr. Martens and Vera Wang made the point.']}}]}, {'provenance': [{'wikipedia_id': '45280343', 'title': 'Super Bowl LI halftime show', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['Lady Gaga headlined the show, performing a medley of her songs, including material from her then-most recent studio album, "Joanne" (2016)', 'Lady Gaga', 'The Super Bowl LI Halftime show took place on February 5, 2017 at NRG Stadium in Houston, Texas, as part of Super Bowl LI. Lady Gaga headlined the show, performing a medley of her songs, including material from her then-most recent studio album, "Joanne" (2016). The National Football League (NFL) confirmed the singer would helm the LI halftime show after discussions with the singer Adele proved unfruitful.']}}]}]