What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Karen is not making tea. Karen is making tea if and only if Joseph is reading a book. Joseph is reading a book if and only if Thomas is taking a plane. Patricia is listening to a song.
Karen is not making tea and Patricia is listening to a song. Patricia is listening to a song and Karen is not making tea. If Karen makes tea, then Joseph is reading a book. If Joseph reads a book, then Thomas is taking a plane. If Joseph reads a book, then Karen is making tea. If Thomas takes a plane, then Joseph is reading a book. Joseph is not reading a book.