What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x_7 for which if x_7 drives a car, then x_7 is playing squash. For all x_7, x_7 will make tea or x_7 will drive a car. For all x_7, if x_7 were a writer, then x_7 is playing squash. For all x_7, x_7 will make tea if and only if x_7 is a writer.
For all x_7, if x_7 makes tea, then x_7 is a writer. For all x_7, if x_7 were a writer, then x_7 is making tea.