Instruct: Classify a given review into positive or negative sentiment.
Query: Very powerful piece of work

I saw this play many years ago when it first opened in London & was completely blown away by it (didn't hurt to have 2 fabulous actors playing the leads - Judi Dench for one). I subsequently bought the book & it reads just as well. I am only sorry that because of difficulties with Actors equity it hasn't yet been performed in New York.The themes of love and revenge are dealt with in ways both tender and terrible. It gets you in the gut.