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Proofgold Proof

pf
Let x0 of type ι be given.
Let x1 of type ιο be given.
Let x2 of type ι be given.
Assume H0: In x2 (Sep x0 (λ x3 . x1 x3)).
Apply andE with In x2 x0, x1 x2.
Apply unknownprop_d8740353ee211303fc5f492a89312f8632727f644f6079ddb4e027d2c48051cb with x0, x1, x2.
The subproof is completed by applying H0.