Our company sells loose$-$leaf teas from all over the world. We record the type of each tea, such as black, green, and oolong. We also code the tea grade, such as FTGFOP$1.$ Each kind of tea is produced by a specific plantation. Each plantation has a name, such as Duflating Estate, and a regional label, such Assam or Ceylon. We track all the teas each customer has purchased to make it easier for them to repurchase the same teas. For each of our customers, we have an email address and a home address.

What are the entities?