What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, x_9 will cook. For all x_9, x_9 is a mechanic or x_9 is not a scientist. For all x_9, x_9 is a scientist.
For all x_9, x_9 will cook and x_9 is a scientist. For all x_9, x_9 is a scientist and x_9 will cook. For all x_9, if x_9 were a scientist, then x_9 is a mechanic.