Let x0 of type ι be given.
Let x1 of type ι be given.
Apply unknownprop_c3fe42b21df0810041479a97b374de73f7754e07c8af1c88386a1e7dc0aad10f with
binintersect x0 x1,
x0.
The subproof is completed by applying unknownprop_625f5facc6d0cfc120b9f58035b73c3c65ed740e13bf862e9499b972625669a5 with x0, x1.