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Require Import Program.
Set Implicit Arguments.
Unset Strict Implicit.
Definition def (a : nat) := a = a.
Structure record {a : nat} {D : def a} :=
inR { prop : Prop }.
Program
Canonical Structure ins (a : nat) (rec : @record a _) :=
@inR a _ (prop rec).
Next Obligation.
exact eq_refl.
Defined.
Next Obligation.
exact eq_refl.
Defined.
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