Classify the following sentence: "Lettuce is a vegetable."
The given sentence is a declarative sentence. It is a statement that conveys information or makes an assertion. Specifically, it classifies lettuce as a vegetable.
Complete the following task based on the instruction and optional input provided.### Instruction:
Classify the following sentence: "Lettuce is a vegetable."

### Output:
The given sentence is a declarative sentence. It is a statement that conveys information or makes an assertion. Specifically, it classifies lettuce as a vegetable.