$2)$ Draw an EER diagram $($supertype$/$subtype$)$ for the following problem $(50$ points$)$

A nonprofit organization depends on several different types of persons for its successful

operation. The organization is interested in the following attributes for all persons: SSN$,$ Name,

Address, City$/$ State$/$Zip$,$ and Telephone. Three types of persons are of most significant interest: employees, volunteers, and donors.

Employees have only a Date Hired attribute.

Volunteers have only a Skill attribute $($multi$-$valued$).$

Donors have only a relationship $($named Donates$)$ with an Item entity type $($no attribute for Donor$).$ A donor must have donated one or more items, and an item may have no donors or one or more donors. There are persons other than employees, volunteers, and donors who are of interest to the organization so that a person need not belong to any of these three groups. On the other hand, at a given time, a person may belong to two or more of these groups $($e$.$g$.,$

employee and donor$).$