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 Jessica goes running, then John is making tea. If it is windy, then Jessica is running. If John makes tea, then Jessica is running. John is making tea or it is windy.
If it is windy, then John is making tea can be inferred via the transitivity rule. Jessica is running can be inferred via the disjunction elimination rule. Jessica is running if and only if John is making tea can be inferred via the biconditional introduction rule. John is making tea if and only if Jessica is running can be inferred via the biconditional introduction rule.