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_16, if x_16 climbs a mountain, then x_16 is an astronaut. If Jennifer plays a game, then Jessica is an astronaut. Jennifer is playing a game or Jessica is climbing a mountain. It is raining.
If Jessica were a mechanic, then Jennifer is playing a game can be inferred via the rewriting rule.