What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_12, if x_12 plays tennis, then x_12 is playing squash. For all x_12, if x_12 plays squash, then x_12 is playing tennis. For all x_12, if x_12 plays tennis, then x_12 is drinking water. For all x_12, if x_12 makes tea, then x_12 is cooking. There is at least one x_12 for which if x_12 drinks water, then x_12 is making tea.
For all x_12, if x_12 plays squash, then x_12 is drinking water. There is at least one x_12 for which if x_12 drinks water, then x_12 is cooking. There is at least one x_12 for which if x_12 plays tennis, then x_12 is making tea. For all x_12, x_12 will play tennis if and only if x_12 will play squash. For all x_12, x_12 will play squash if and only if x_12 will play tennis.