What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_1, if x_1 makes tea, then x_1 is drinking water. There is at least one x_1 for which if x_1 drinks water, then x_1 is making tea.
There is at least one x_1 for which x_1 will drink water if and only if x_1 will make tea. There is at least one x_1 for which x_1 will make tea if and only if x_1 will drink water.