Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Difficult going

I have read a lot of GG and consider myself an admirer, but this one was a real chore to get through. It honestly gave me a headache several times. The sister and brother Farrant are fairly compelling characters but the Swedish industrialist Krogh is a complete cipher-- also murky beyond comprehension are whatever financial shenanigans he is up to. The book has moments of clarity but large swatches (page after page really) were for me nearly incomprehensible. The story appears to be narrated from several points of view which adds to the confusion. Stick with his better known works unless you are determined to read everything he ever wrote.