Question: Who was the first person voted off big brother?
Disambiguated questions and answers: question: Who was the first person voted off the first season of American Big Brother?
Who was the first person voted off the first series of  British Big Brother?
Who was the first person voted off the first season of American Celebrity Big Brother?
Who was the first person voted off Celebrity Big Brother British series 1?
Who was the first person voted off Big Brother Canada season 1?
answer: William Collins
Sada Walkington
Chuck Liddell
Chris Eubank
Kat Yee
Natural Questions answer: William (from the Wikipedia article "Big Brother 1 (U.S.)")