Let x0 of type ι be given.
Let x1 of type ι be given.
Let x2 of type ι be given.
Let x3 of type ι be given.
Let x4 of type ι → ο be given.
Assume H0: x4 x0.
Assume H1: x4 x1.
Assume H2: x4 x2.
Assume H3: x4 x3.
Let x5 of type ι be given.
Apply unknownprop_3de4fed6100f7a1644d3bcc671dd5818f525687e19a89aa1d64708dea3801718 with
x0,
x1,
x2,
x3,
x5,
x4 leaving 5 subgoals.
The subproof is completed by applying H4.
The subproof is completed by applying H0.
The subproof is completed by applying H1.
The subproof is completed by applying H2.
The subproof is completed by applying H3.