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 makes tea, then x_12 is playing squash. For all x_12, if x_12 makes tea, then x_12 is a sailor. For all x_12, if x_12 drives a car, then x_12 is playing tennis. For all x_12, if x_12 plays squash, then x_12 is making tea. There is at least one x_12 for which if x_12 were a sailor, then x_12 is driving a car.
For all x_12, if x_12 plays squash, then x_12 is a sailor. There is at least one x_12 for which if x_12 were a sailor, then x_12 is playing tennis. There is at least one x_12 for which if x_12 makes tea, then x_12 is driving a car. For all x_12, x_12 will make tea 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 make tea.