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

I am a 29 yr old non-athlete, who started skiing last year and could only go upto the wedgie turns level down the green slopes. Thank heavens I found this book and bought one copy. After reading three chapters, I hit the slopes, pushed myself to moderate and difficult blue slopes. Oh boy! I couldn't believe the way I was skiing. I couldn't conceal the wide grin on my face as I was making those smooth parallel S turns. I never believed one could learn skiing by reading a book. This book works, delivers everything it promises. Thanks Lito, for teaching me how to ski.