What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_10, if x_10 were a scientist, then x_10 is a politician. For all x_10, x_10 is a politician if and only if x_10 is an artist. For all x_10, if x_10 plays tennis, then x_10 is a politician. For all x_10, x_10 is a scientist or x_10 will play tennis. For all x_10, if x_10 were a soldier, then x_10 is an artist.
For all x_10, x_10 is a politician. For all x_10, if x_10 were a politician, then x_10 is an artist. For all x_10, if x_10 were an artist, then x_10 is a politician.