Classify the sentences into three categories: statement, question, and command.
Input: Do you have time to meet?
Go for a walk.
How many people are there?
Statement: Do you have time to meet?
Question: Go for a walk.
Command: How many people are there?
The sentences are classified as follows:
Statement: "Do you have time to meet?"
Question: "Go for a walk?"
Command: "How many people are there?"