The arteriopath is readily fatigued by mental effort and refuses to make it; conversely, as I have had occasion to note, he may develop a peculiar sense of well-being, a physical but more often psychical feeling of euphoria, ...

What my parents served me from that very same stewpot was chicken.

the four-armed creature.

The selectional restrictions imposed by the actions or states in which the pronouns participate can also be used to help determine the possible referent, so that, in the example above, “them” should refer to a plural object that is deleteable. These selectional restrictions are very powerful in limited domains. For instance, in our example domain, only messages are deleteable.