What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, if x_8 cooks, then x_8 is an artist. For all x_8, if x_8 plays squash, then x_8 is sad. For all x_8, x_8 will climb a mountain or x_8 will play squash. For all x_8, x_8 is not sad or x_8 will cook. There is at least one x_8 for which if x_8 writes a letter, then x_8 is an artist. For all x_8, if x_8 climbs a mountain, then x_8 is sad.
For all x_8, x_8 is sad.