1. Draw an ER/EER diagram to model the situation described below. A horse has a registration number (by which it is identified), name, type (quarter horse or thoroughbred), gender, and trainer. A horse is only trained by one person, but a given trainer may train any number of horses. The heritage of every horse must also be maintained, if the information is available. For example, the mother (dam) and father (sire) should be recorded. It is also necessary to identify the offspring of a given horse