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_10, x_10 is rich. For all x_10, x_10 will climb a mountain and x_10 is a politician. For all x_10, x_10 will take a plane.
For all x_10, x_10 will climb a mountain can be inferred via the universal simplification rule. For all x_10, x_10 is a politician can be inferred via the universal simplification rule. For all x_10, x_10 is rich and x_10 will take a plane can be inferred via the universal conjunction rule. For all x_10, x_10 will take a plane and x_10 is rich can be inferred via the universal conjunction rule.