Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Grounded Adapter did not work

When I plugged this into the wall at a hostel in London and then plugged a converter into it, I was not able to recieve power. When I plugged the same adapter into a different converter I was able to use my electronics. Unfortunately I can't return the adapter as I am studying abroad this semester. Other than that, I recieved it quickly and the packaging, while not extraordinary, was decent.