Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: Does this sunwall help keep out light? if so how much light will 4 keep out?
Document: Can somebody please help me. I received my canopy today and all I got was the wall sheet and like three metallic things. Am not sure how to build it or complete it. Please help I bought it for the beach. I hope I didn't waste my money.
The photo is misleading, the product for sale is the wall alone. The 'roof' and poles are sold separately. However, it is very small and packs away tightly and is light too.
Holds up well during light wind. The clips work great. The only thing you need to be aware of is that some of the Coleman canopies do not have the spots to attach the clips from the sidewall. You can still attach it to those canopies however it will not fit as well as the canopies that have the built in attachment points.
The canopy is well done. It's the first canopy I've bought in 20 years, and this one is well thought out, with the sunwall in place. You can also purchase additional sunwalls separately, which we did, for the purpose of blocking wind and sun when we are at particularly warm or windy farmer's markets.
I do the occasional BBQ competitions and have 3 of these that I use with my canopy. The elastic attachments work great and it's so much nicer than trying to clamp a tarp on the side. They come in a nice zipper bag and fit very easily in, even if you don't fold it up perfectly.I did make one mistake trying to dry these in the dryer (on air dry) after they were out in the rain.
Works like a charm. JMC
Very effective in keeping sun out & very easy to install
This canopy is very easy to set up and is of high quality. The click pole extenders make it so easy to put up and take down.The lighting is nice and bright.
The canopy itself I have 'permanently' attached as a 'car port'. I bolted and strapped the thing down. I've had it up a week  With the wind upward gusts of 30mph I'm very happy with these sides. I think they were essential for the stability in the wind. The sizes are not great as my two sides I must have stretched the canopy legs too far because I cannot strap the bottoms to the poles so be aware of the extension out on the canopy.
Purchased this thinking it was an amazing deal on an &#34; instant canopy&#34;  and it was only the sun shade. Disappointed. Can't return it either. Ended up giving it away.
Answer: yes