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: Elisabeth is running or John is not poor. Elisabeth is a taxi driver or John is poor. For all x_14, x_14 will go running if and only if x_14 is a taxi driver.
If John were poor, then Elisabeth is running can be inferred via the rewriting rule. For all x_14, if x_14 goes running, then x_14 is a taxi driver can be inferred via the universal biconditional elimination rule. For all x_14, if x_14 were a taxi driver, then x_14 is running can be inferred via the universal biconditional elimination rule.