What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: Linda is not a sailor or it is snowing. Linda is not a musician or Charles is climbing a mountain. For all x_8, x_8 is not an artist or x_8 is a musician. For all x_8, x_8 is an artist or x_8 is a sailor.
For all x_8, x_8 is a sailor or x_8 is a musician can be inferred via the universal resolution rule.