Question: Paul Robert Potts, is a British tenor, in 2007 he won the first series of ITV's "Britain's Got Talent" with his performance of which aria from the final act of Giacomo Puccini's opera "Turandot"?
Sentence (from "Nessun dorma"): In the aria, Calaf expresses his triumphant assurance that he will win the princess.
Relevant evidence: No