The city of Boston has many employees assigned to various departments. Department include Elections, Police, Fire, Engineers, Laborers, Revenue, Property, Legal, etc. There are various employee ranks within each department and various pay rates. In addition to this some employees are supervisors of the other employees of the same type. Engineers and laborers are assigned to projects such as road repair, new signage, and utility hookups. Project information includes project type, request date$/$time$,$ urgency, etc. Projects are done for city residents and or city businesses. Projects are tracked. On each project you may have many engineers and many laborers participating. We also need to keep track of the equipment used for the projects and repairs.

Please draw an ERD for the above scenario that captures the required Entities, Attributes, Primary Key$($s$)$ and Cardinalities. It can be hand drawn $-$ submit a JPEG or PDF of your diagram