Consider the following premises. For all z, z is not a lawyer. Susan is a lawyer if and only if Patricia is running. Patricia is running or it is windy. Can we infer the following from them? It is not windy.
 From the fact that for all z, z is not a lawyer we can infer that Susan is not a lawyer. From the fact that Susan is a lawyer if and only if Patricia is running, and that Susan is not a lawyer we can infer that Patricia is not running. Finally, from the fact that Patricia is running or it is windy, and that Patricia is not running we can infer that it is windy, which contradicts that It is not windy. Therefore, the answer is no.