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What does Iago claim Cassio said while asleep?
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Otello
Italian composer Giuseppe Verdi was known for operas such as Rigoletto (1851).
In the opera Otello by Giuseppe Verdi, Iago attempts to manipulate Otello by fabricating "proof" of Desdemona's infidelity. As part of this deception, Iago claims that he heard Cassio talking in his sleep about Desdemona.1