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 goes running, then x_5 is a carpenter. For all x_5, x_5 will go running or x_5 is a musician. There is at least one x_5 for which if x_5 were a musician, then x_5 is a carpenter. For all x_5, if x_5 were a carpenter, then x_5 is running.
There is at least one x_5 for which if x_5 were a musician, then x_5 is running. There is at least one x_5 for which x_5 is a carpenter. For all x_5, x_5 will go running if and only if x_5 is a carpenter. For all x_5, x_5 is a carpenter if and only if x_5 will go running.