What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: For all x_14, if x_14 were a soldier, then x_14 is drinking water. If it is windy, then it is overcast. Linda is a soldier. It is windy or Charles is cooking. If Charles cooks, then it is overcast.
It is overcast can be inferred via the disjunction elimination rule. There is at least one x for which x is a soldier can be inferred via the existential generalization rule.