What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is windy if and only if Barbara is drinking water. If Elisabeth were a taxi driver, then Jennifer is a mechanic. If it is windy, then Elisabeth is a taxi driver. If Jennifer were a mechanic, then Barbara is drinking water.
If Elisabeth were a taxi driver, then Barbara is drinking water. If it is windy, then Jennifer is a mechanic. If it is windy, then Barbara is drinking water. If Barbara drinks water, then it is windy.