theorem instCoeDepTypeLegalRuleOfIs._proof_1
theorem instCoeDepTypeLegalRuleOfIs._proof_1: ∀ (x : Type) [pzc19e91.LegalRule.Is x], pzc19e91.LegalRule.Is x
theorem instCoeDepTypeLegalRuleOfIs._proof_1
theorem instCoeDepTypeLegalRuleOfIs._proof_1: ∀ (x : Type) [pzc19e91.LegalRule.Is x], pzc19e91.LegalRule.Is x