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: Charles is a writer. Jessica is not drinking water. For all x, if x were bored, then x is drinking water.
Charles is a writer and Jessica is not drinking water can be inferred via the conjunction rule. Jessica is not drinking water and Charles is a writer can be inferred via the conjunction rule.