theorem Dictionary.instCoeContradictoryBeliefBelief._proof_1
theorem Dictionary.instCoeContradictoryBeliefBelief._proof_1: ∀ (v : e4xks8h4.Dictionary.ContradictoryBelief), e4xks8h4.Dictionary.Belief.Is (Subtype.val v)
theorem Dictionary.instCoeContradictoryBeliefBelief._proof_1
theorem Dictionary.instCoeContradictoryBeliefBelief._proof_1: ∀ (v : e4xks8h4.Dictionary.ContradictoryBelief), e4xks8h4.Dictionary.Belief.Is (Subtype.val v)