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_3, if x_3 were an office clerk, then x_3 is working. For all x_3, if x_3 were excited, then x_3 is working. For all x_3, if x_3 were a poet, then x_3 is excited. For all x_3, x_3 is an office clerk.
For all x_3, x_3 will work can be inferred via the universal modus ponens rule. For all x_3, if x_3 were a poet, then x_3 is working can be inferred via the universal transitivity rule.