Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent!

I love puzzles and anyone who wants to keep the puzzle will need some kind of glue. This puzzle conserver is something you apply on top of the puzzle. It goes on white and dries glossy. What's more important is that it comes with an applicator that is easy to use, much better than a pot of glue and a brush! Highly recommended for puzzle lovers!