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: For all x_14, x_14 is not a sailor. For all x_14, x_14 will make tea or x_14 will write a letter. It is snowing. For all x_14, if x_14 makes tea, then x_14 is a sailor.
For all x_14, x_14 will not make tea can be inferred via the universal modus tollens rule.