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: There is at least one x_14 for which x_14 is happy. For all x_14, x_14 is curious and x_14 will drive a car. For all x_14, x_14 is a bartender.
For all x_14, x_14 is curious can be inferred via the universal simplification rule. For all x_14, x_14 will drive a car can be inferred via the universal simplification rule. There is at least one x_14 for which x_14 is happy and x_14 is a bartender can be inferred via the existential conjunction rule. There is at least one x_14 for which x_14 is a bartender and x_14 is happy can be inferred via the existential conjunction rule.