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: It is late if and only if Patricia is running. It is snowing if and only if it is late. For all x_10, x_10 will not go running.
If it is late, then Patricia is running can be inferred via the biconditional elimination rule. If it snows, then it is late can be inferred via the biconditional elimination rule. If Patricia goes running, then it is late can be inferred via the biconditional elimination rule. If it is late, then it is snowing can be inferred via the biconditional elimination rule.