Instruct: Classify the given review into positive or negative sentiment.
Query: disappointed

I do not surf , but I enjoy watching good films about surfing .I am sad to say I was very disappointed in this film .I can appreciate the idea behind this film but it was very boring to watch .Surf films I have watched and enjoyed and rate 4 and 5 are Billabong Odyssey , Riding Giants , Endless Summer 2 and Step into Liquid .