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: If James were a police officer, then Charles is playing squash. Sarah is not curious. If Charles plays squash, then Sarah is bored. If Sarah were curious, then James is a police officer. For all x_17, if x_17 were bored, then x_17 is curious.
If James were a police officer, then Sarah is bored can be inferred via the transitivity rule. If Sarah were curious, then Charles is playing squash can be inferred via the transitivity rule.