Create a classification task by clustering the given list of items.
Apples, oranges, bananas, strawberries, pineapples
Based on the given list, one way to cluster the items would be by classifying them into different types of fruit. 

| Class       | Items             |
| ----------- | ----------------  |
| Citrus      | Oranges           |
| Berries     | Strawberries      |
| Tropical    | Pineapples        |
| Tree Fruits | Apples, Bananas   |