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: Linda is not sleeping. If it is late, then Linda is drinking water. If Linda plays tennis, then it is late. For all x_12, x_12 will sleep if and only if x_12 will drink water.
If Linda plays tennis, then Linda is drinking water can be inferred via the transitivity rule. For all x_12, if x_12 sleeps, then x_12 is drinking water can be inferred via the universal biconditional elimination rule. For all x_12, if x_12 drinks water, then x_12 is sleeping can be inferred via the universal biconditional elimination rule.