A correction to my previous post -- it was a 'royalty' example. It should read
Well, the son of Prince George, who might be one day king of Great Britain, 'is
not [yet] alive' (i.e. with "Alive" symbolised as "A" we have "Ax"), but it
would be rude to say that this x is 'dead'. The logical form shows that "~As"
is totally different from "Ds," where "D" means "Dead".