Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This thing is great!

I really like this mailbox! It's big enough to hold a weeks worth of mail and it's locked so I feel comfortable that my mail will be there when I go to get it. No more bothering the neighbors to empty my mailbox for me when we go on vacation. It also has a clean simple design that doesn't attract too much attention to itself hanging near my front door.