Question: Who was the first act on live aid?

Disambiguated questions and answers:
context: The Coldstream Guards band opened with the "Royal Salute", a brief version of the national anthem "God Save the Queen". Status Quo were the first act to appear and started their set with "Rockin' All Over the World", also playing "Caroline" and fan favourite "Don't Waste My Time". "Bob told me, 'It doesn't matter a fuck what you sound like, just so long as you're there,'" recalled guitarist and singer Francis Rossi. "Thanks for the fucking honesty, Sir Bob." This would be the band's last appearance with bassist and founder member Alan Lancaster and drummer Pete Kircher. Princess Diana and Prince Charles were among those in attendance as the concert commenced.
question: Who was the first act on live aid at Wembley Stadium?
short_answers: Status Quo
wikipage: Live Aid

context: No context provided
question: Who was the first act on live aid at John F. Kennedy stadium?
short_answers: Joan Baez

context: No context provided
question: Who was the first performance on live aid at Wembley Stadium, prior to the first musical act?
short_answers: Coldstream Guards

context: No context provided
question: Who was the first performance on live aid at John F. Kennedy Stadium, prior to the first musical act?
short_answers: Bernard Watson

context: The Coldstream Guards band opened with the "Royal Salute", a brief version of the national anthem "God Save the Queen". Status Quo were the first act to appear and started their set with "Rockin' All Over the World", also playing "Caroline" and fan favourite "Don't Waste My Time". "Bob told me, 'It doesn't matter a fuck what you sound like, just so long as you're there,'" recalled guitarist and singer Francis Rossi. "Thanks for the fucking honesty, Sir Bob." This would be the band's last appearance with bassist and founder member Alan Lancaster and drummer Pete Kircher. Princess Diana and Prince Charles were among those in attendance as the concert commenced.
question: Who was the first main act to appear on Live Aid at Wembley Stadium?
short_answers: Status Quo
wikipage: Live Aid

context: No context provided
question: Who was the first act to appear on Live Aid at John F. Kennedy Stadium?
short_answers: Joan Baez

Long answers:
knowledge: content: Live Aid was a benefit concert held on Saturday 13 July 1985, as well as a music-based fundraising initiative. The original event was organised by Bob Geldof and Midge Ure to raise funds for relief of the 1983–1985 famine in Ethiopia. 
wikipage: Live Aid Fundraising

content: The opening artist Joan Baez announced to the crowd, "this is your Woodstock, and it's long overdue," before leading the crowd in singing "Amazing Grace" and "We Are the World".
wikipage: Live Aid John F. Kennedy Stadium
long_answer: Live Aid was a benefit concert held on Saturday 13 July 1985, as well as a music-based fundraising initiative. The original event was organised by Bob Geldof and Midge Ure to raise funds for relief of the 1983–1985 famine in Ethiopia. At the Wembley stadium, the Coldstream Guards band opened with the "Royal Salute", a brief version of the national anthem "God Save the Queen". Status Quo were the first act to appear and started their set with "Rockin' All Over the World", also playing "Caroline" and fan favourite "Don't Waste My Time". At the John F. Kennedy stadium, the opening artist Joan Baez announced to the crowd, "this is your Woodstock, and it's long overdue," before leading the crowd in singing "Amazing Grace" and "We Are the World". Bernard Watson was the first performer on Live Aid at John F. Kennedy Stadium, prior to the first musical act.

knowledge: content: Live Aid was a benefit concert held on Saturday 13 July 1985, as well as a music-based fundraising initiative. The original event was organised by Bob Geldof and Midge Ure to raise funds for relief of the 1983–1985 famine in Ethiopia. Billed as the "global jukebox", the event was held simultaneously at Wembley Stadium in London, UK, attended by about 72,000 people and John F. Kennedy Stadium in Philadelphia, US, attended by 89,484 people.
wikipage: Live Aid

content: The Band of the Coldstream Guards is one of the oldest and best known bands in the British Army, having been officially formed on 16 May 1785 under the command of Major C F Eley.
wikipage: Band of the Coldstream Guards

content: Status Quo are an English rock band that formed in 1962.
wikipage: Status Quo (band)

content: Joan Chandos Baez (/baɪz/;[1][2] born January 9, 1941)[3] is an American singer, songwriter, musician, and activist.
wikipage: Joan Baez
long_answer: The 1985 benefit concert Live Aid was held in two locations simultaneously, Wembley Stadium in London, UK, and John F. Kennedy Stadium in Philadelphia, US. At Wembley Stadium, Band of the Coldstream Guards, one of the oldest and best-known bands in the British Army, performed first, followed by the first main act, English rock band Status Quo. In Philadelphia, Bernard Watson gave the first performance, followed by a musical act by musician Joan Baez.