The conversation between human and AI assistant.
[|Human|] Extract all the names of people from this article about Robert Ball.
[|AI|] Bob Stawell Ball, Mary Ball, Robert Ball, Anne Ball, Mary Ball, Bent Ball, James White, William Todhunter, William Thompson, Robert Patterson, George Hyndman, Edward Forbes
[|Human|] 
Extract all the names of people from this article about Robert Ball.