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_7 for which x_7 will play tennis. For all x_7, if x_7 drinks water, then x_7 is playing squash. For all x_7, x_7 will drink water and x_7 will cook.
For all x_7, x_7 will drink water can be inferred via the universal simplification rule. For all x_7, x_7 will cook can be inferred via the universal simplification rule.