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_12, x_12 will drink water. For all x_12, x_12 will go running. There is at least one x_12 for which if x_12 plays tennis, then x_12 is playing squash. For all x_12, if x_12 drinks water, then x_12 is playing tennis.
For all x_12, x_12 will play tennis can be inferred via the universal modus ponens rule. There is at least one x_12 for which if x_12 drinks water, then x_12 is playing squash can be inferred via the existential transitivity rule. For all x_12, x_12 will drink water and x_12 will go running can be inferred via the universal conjunction rule. For all x_12, x_12 will go running and x_12 will drink water can be inferred via the universal conjunction rule.