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_10, x_10 is a carpenter. There is at least one x_10 for which if x_10 climbs a mountain, then x_10 is listening to a song. For all x_10, if x_10 were a carpenter, then x_10 is listening to a song.
For all x_10, x_10 will listen to a song can be inferred via the universal modus ponens rule.