Classify each of the following as straight or curved: banana, baseball bat, hook, rainbow, convex lens, ruler
Banana: Curved
Baseball Bat: Straight
Hook: Curved
Rainbow: Curved
Convex Lens: Curved
Ruler: Straight
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: Classify each of the following as straight or curved: banana, baseball bat, hook, rainbow, convex lens, ruler
### Input: 
### Response: Banana: Curved
Baseball Bat: Straight
Hook: Curved
Rainbow: Curved
Convex Lens: Curved
Ruler: Straight