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 Jennifer listens to a song, then Jennifer is a poet. For all x_13, if x_13 plays a game, then x_13 is listening to a song. Jennifer is listening to a song. For all x_13, if x_13 were a poet, then x_13 is playing a game.
There is at least one x for which x will listen to a song can be inferred via the existential generalization rule. For all x_13, if x_13 were a poet, then x_13 is listening to a song can be inferred via the universal transitivity rule.