What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 is a writer or x_7 will go running. For all x_7, x_7 is a writer if and only if x_7 is fast. For all x_7, if x_7 goes running, then x_7 is fast.
For all x_7, if x_7 were a writer, then x_7 is fast. For all x_7, if x_7 were fast, then x_7 is a writer.