What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Linda is poor if and only if Michael is playing squash. If William were a mechanic, then Elisabeth is working. If Michael plays squash, then William is a mechanic.
If Michael plays squash, then Elisabeth is working. If Linda were poor, then Michael is playing squash. If Michael plays squash, then Linda is poor.