1.(a)Probably true, although to assume automatically an anthropocentric view
simply reveals one’s prejudices. It may be that it is the animals which supervise the
keepers.
(b)Probably true.
(c)The relationship implied between Keeper and Food is that of a
KeeperSupervisesAnimalWhichEatsFood relationship, not a KeeperSupervisesFood
relationship; the two can be equated only if there is some further enterprise rule such as
‘a keeper who supervises an animal also supervises the food eaten by that animal’. If
necessary, a SupervisesFood relationship could be added to the diagram.
(d)A similar situation to (c). Why is it more ...
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