Question: For this discussion forum, you will list three entities and then identify five properties for each entity. State which property you think would serve well as a unique identifier, or if you would need to create an artificial property for that purpose.

Here is a very specific example in the format you should use for the discussion forum:

Entity: Automobile

Properties:

1. Year

2. Make

3. Model

4. Vehicle Identification Number (VIN)

5. Color

Unique Identifier: VIN

Be sure to place your entries into the discussion forum in this format, numbering the properties and highlighting the unique identifier.