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_8, x_8 will play squash and x_8 is an artist. For all x_8, x_8 is a doctor. For all x_8, x_8 is a carpenter.
For all x_8, x_8 will play squash can be inferred via the universal simplification rule. For all x_8, x_8 is an artist can be inferred via the universal simplification rule. For all x_8, x_8 is a doctor and x_8 is a carpenter can be inferred via the universal conjunction rule. For all x_8, x_8 is a carpenter and x_8 is a doctor can be inferred via the universal conjunction rule.