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: Jennifer is playing a game. For all x_12, x_12 is a doctor or x_12 will go running. Mary is not a doctor.
Jennifer is playing a game and Mary is not a doctor can be inferred via the conjunction rule. Mary is not a doctor and Jennifer is playing a game can be inferred via the conjunction rule.