I want to know the answer to the following question:
What banners appeared on the winners' podium at the August 2013 ceremony?
All the background I'm provided with is that "In the video, the banners rise up automatically—activists controlled their appearance with the use of four radio car antennas—revealing the website URL, alongside an image that consists of half of a polar bear's head and half of the Shell logo.". Is that enough to answer the question?
Answer: no