(<=> (Logterm ?X) (Or (Exists (?P1 ?T1) (And (Sentence ?P1) (Term ?T1) (= ?X (Listof (Quote If) ?P1 ?T1)))) (Exists (?P1 ?T1 ?T2) (And (Sentence ?P1) (Term ?T1) (Term ?T2) (= ?X (Listof (Quote If) ?P1 ?T1 ?T2)))) (Exists (?Clist) (And (List ?Clist) (=> (Item ?C ?Clist) (Exists (?P ?T) (And (Sentence ?P) (Term ?T) (= ?C (Listof ?P ?T))))) (= ?X (Cons (Quote Cond) ?Clist))))))