What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: Karen is reading a book or Patricia is not driving a car. If Karen reads a book, then it is cold. Jessica is playing tennis if and only if it is late. If it is cold, then Jessica is playing tennis. It is late or Patricia is driving a car.
If Karen reads a book, then Jessica is playing tennis can be inferred via the transitivity rule. If Patricia drives a car, then Karen is reading a book can be inferred via the rewriting rule. If Jessica plays tennis, then it is late can be inferred via the biconditional elimination rule. If it is late, then Jessica is playing tennis can be inferred via the biconditional elimination rule.