Apply unknownprop_d378b2c894939b96acaefeb7b90d3a62ba779e2a2ea4390f7801c59b07291ce2 with
λ x0 . True leaving 2 subgoals.
Let x0 of type ι be given.
Let x1 of type ι be given.
The subproof is completed by applying TrueI.
Let x0 of type ι be given.
Let x1 of type ι be given.
The subproof is completed by applying TrueI.