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_13 for which x_13 will not play squash or x_13 will drink water. For all x_13, x_13 will play a game. For all x_13, x_13 will play squash. For all x_13, if x_13 drinks water, then x_13 is taking a plane. For all x_13, if x_13 were a nurse, then x_13 is taking a plane.
For all x_13, x_13 will play a game and x_13 will play squash can be inferred via the universal conjunction rule. For all x_13, x_13 will play squash and x_13 will play a game can be inferred via the universal conjunction rule.