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