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: Michael is listening to a song or Jennifer is not playing tennis. If Michael listens to a song, then Jennifer is playing tennis. Michael is listening to a song if and only if Mary is reading a book.
If Jennifer plays tennis, then Michael is listening to a song can be inferred via the rewriting rule. If Michael listens to a song, then Mary is reading a book can be inferred via the biconditional elimination rule. If Mary reads a book, then Michael is listening to a song can be inferred via the biconditional elimination rule.