Lars Onsager (November 27, 1903 – October 5, 1976) was a Norwegian-born American physical chemist and theoretical physicist. He held the Gibbs Professorship of Theoretical Chemistry at Yale University. He was awarded the Nobel Prize in Chemistry in 1968.
Lars Onsager taught at Yale University when he received the Nobel Prize.
The paragraph says he taught at Yale, but does not give specific dates, so it can not be confirmed. I think the system was fooled because the sentences in the paragraph about Yale and the Nobel Prize were back to back.