What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_7, x_7 is not excited. For all x_7, if x_7 were a cashier, then x_7 is excited. There is at least one x_7 for which if x_7 were a taxi driver, then x_7 is an artist. For all x_7, if x_7 were an artist, then x_7 is a taxi driver. For all x_7, x_7 is an artist if and only if x_7 is a cashier.
For all x_7, x_7 is not a cashier. There is at least one x_7 for which x_7 is a taxi driver if and only if x_7 is an artist. There is at least one x_7 for which x_7 is an artist if and only if x_7 is a taxi driver. For all x_7, if x_7 were an artist, then x_7 is a cashier. For all x_7, if x_7 were a cashier, then x_7 is an artist.