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: For all x_15, x_15 will sleep. For all x_15, x_15 is a taxi driver or x_15 will not sleep.
For all x_15, if x_15 sleeps, then x_15 is a taxi driver can be inferred via the universal rewriting rule.