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, if x_14 plays squash, then x_14 is writing a letter. If it is late, then Karen is writing a letter. It is late or Karen is playing squash.
If Karen drinks water, then it is late can be inferred via the rewriting rule.