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 y, if y were an office clerk, then y is excited. For all y, y is an office clerk or y is not a writer. For all y, if y were excited, then y is a writer.
For all y, if y were an office clerk, then y is a writer can be inferred via the universal transitivity rule. For all y, if y were a writer, then y is an office clerk can be inferred via the universal rewriting rule.