         the left foot of someone playing in a football game; the
            right hand of someone who is shaking hands; the claws of a
            cat who is scratching someone. As a negative example,
            consider a person's hair when that person is getting a
            haircut. The hair is not an <a
            href="./doing-vocab.html#actorPartsInvolved">#$actorPartsInvolved,</a>
            because the person is passive in that event; it is, however,
            an <a
            href="./doing