What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Linda is listening to a song if and only if William is reading a book. For all x, x will not read a book. It is cloudy if and only if Linda is listening to a song.
If Linda listens to a song, then William is reading a book. If it is cloudy, then Linda is listening to a song. If William reads a book, then Linda is listening to a song. If Linda listens to a song, then it is cloudy.