Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I'm pleased with these headphones, which I bought to block out sound while I read

In my neighborhood in summer there are large lawn-mowers going just when I want to go out and enjoy the fresh air with a good book. These headphones work well for that purpose and would also work well if I remembered to use them when I'm mowing. They work well. I'm happy with them.