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: If Richard drives a car, then Charles is not a lawyer. For all x_11, x_11 is a lawyer and x_11 will listen to a song.
For all x_11, x_11 is a lawyer can be inferred via the universal simplification rule. For all x_11, x_11 will listen to a song can be inferred via the universal simplification rule.