What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Jennifer is an astronaut or John is a carpenter. For all x_13, if x_13 goes running, then x_13 is an office clerk. If John were a carpenter, then Karen is an office clerk. If it is overcast, then Karen is running. Jennifer is not an astronaut or it is overcast.
John is a carpenter or it is overcast.