What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_2, x_2 is not a janitor or x_2 is a carpenter. For all x_2, x_2 is not a musician. For all x_2, x_2 is a janitor or x_2 is a musician.
For all x_2, x_2 is a musician or x_2 is a carpenter.