Definition: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
Input: Mechanism is very stiff. Vanes on windmill are not designed as a fan. I had to bend them some to work in a high wind and again the mechanism is stiff. The mounting point is screwed into the pole and will not rotate with wind direction. It will actually unscrew itself as it tries to follow wind direction. I needs a swivel and in a quick check of website one is not available.

Mechanism is very stiff. Vanes on windmill are not ...