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: There is at least one x_2 for which if x_2 were a poet, then x_2 is a carpenter. For all x_2, if x_2 plays a game, then x_2 is a carpenter. For all x_2, x_2 is a sailor or x_2 will play a game. For all x_2, x_2 is not a sailor or x_2 is a poet.
For all x_2, x_2 will play a game or x_2 is a poet can be inferred via the universal resolution rule.