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: It is sunny and Susan is happy. If it is sunny, then Jessica is curious. If Jessica were curious, then it is cold.
If it is sunny, then it is cold can be inferred via the transitivity rule. It is sunny can be inferred via the simplification rule. Susan is happy can be inferred via the simplification rule.