Translate the following inference to logic notation: For all x, if y writes a letter, then y is reading a book. Robert is playing a game. For all x, if y reads a book, then y is writing a letter. James is not writing a letter. Therefore James is not reading a book.
forall x: P(x) -> Q(x). p. forall x: Q(x) -> P(x). ~P(a). Therefore ~Q(a).