You will be given a definition of a task first, then some input of the task.
In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.

This is a rip-off. Unstable pieces of cheap metal with a few screws and wing nuts. In addition to that, pain in the rear end to install. Definitely would buy again. Stars for quick shipping only.
Output:
This is a rip-off. Unstable pieces of cheap metal ...