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, x_12 is a server. For all x_12, if x_12 writes a letter, then x_12 is an artist. For all x_12, x_12 is not sad or x_12 will play tennis. For all x_12, x_12 is sad or x_12 will write a letter. There is at least one x_12 for which if x_12 plays tennis, then x_12 is an artist. For all x_12, if x_12 were a server, then x_12 is excited.
For all x_12, x_12 is excited. For all x_12, x_12 will write a letter or x_12 will play tennis.