case prop_0_ =>
  intro D I V E _
  simp only [Holds]
Δ : List Formula
F : Formula
⊢ ∀ (D : Type) (I : Interpretation D) (V : VarAssignment D) (E : Env), (∀ H ∈ [], Holds D I V E H) → Holds D I V E true_
no goals