Question: An entity is an object or thing in the real world distinguishable from other objects (see the explanation of entity-relation model in the textbook). Give

An entity is an "object or thing" in the real world

An entity is an "object or thing" in the real world distinguishable from other objects (see the explanation of entity-relation model in the textbook). Give at least three reasonable examples of things that cannot be modeled using an entity set, i.e. elements in the set will not be distinguishable from each other (you can make assumptions if necessary)

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