What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_22, x_22 is a writer if and only if x_22 is a carpenter. There is at least one x_22 for which x_22 will sleep or x_22 is a poet. For all x_22, x_22 will not sleep. For all x_22, if x_22 were a poet, then x_22 is a carpenter.
There is at least one x_22 for which x_22 is a poet. For all x_22, if x_22 were a writer, then x_22 is a carpenter. For all x_22, if x_22 were a carpenter, then x_22 is a writer.