What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_13, x_13 is a writer or x_13 is a poet. For all x_13, if x_13 were a poet, then x_13 is making tea. For all x_13, if x_13 makes tea, then x_13 is a poet. For all x_13, x_13 will make tea if and only if x_13 is a writer.
For all x_13, x_13 is a poet if and only if x_13 will make tea. For all x_13, x_13 will make tea if and only if x_13 is a poet. For all x_13, if x_13 makes tea, then x_13 is a writer. For all x_13, if x_13 were a writer, then x_13 is making tea.