theorem instCoeDepTypeLegalRuleOfIs._proof_1
theorem instCoeDepTypeLegalRuleOfIs._proof_1: ∀ (x : Type) [zpe87h9g.LegalRule.Is x], zpe87h9g.LegalRule.Is x
theorem instCoeDepTypeLegalRuleOfIs._proof_1
theorem instCoeDepTypeLegalRuleOfIs._proof_1: ∀ (x : Type) [zpe87h9g.LegalRule.Is x], zpe87h9g.LegalRule.Is x