What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_5, if x_5 were a writer, then x_5 is making tea. There is at least one x_5 for which x_5 is not a carpenter. For all x_5, x_5 is a carpenter or x_5 is a writer.
There is at least one x_5 for which x_5 is a writer.