What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Robert is drinking water or Thomas is a mechanic. For all x_13, if x_13 were a nurse, then x_13 is cooking. For all x_13, if x_13 climbs a mountain, then x_13 is cooking. For all x_13, x_13 is a nurse or x_13 will climb a mountain. For all x_13, if x_13 drinks water, then x_13 is not cooking.
For all x_13, x_13 will cook.