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 Susan listens to a song, then Charles is excited. Susan is listening to a song or William is not a nurse. It is sunny or Charles is not excited.
If William were a nurse, then Susan is listening to a song can be inferred via the rewriting rule. If Charles were excited, then it is sunny can be inferred via the rewriting rule.