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 Patricia were a scientist, then it is cloudy. It is snowing or John is a soldier. If it snows, then Patricia is a scientist. If John were a soldier, then it is cloudy.
If it snows, then it is cloudy can be inferred via the transitivity rule.