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 chain come with a master link?  Do I need to buy a tool to install it on a bike with derailleur?  Which tool is recommended for this chain?
Document: FYI... This product requires a chain tool to adjust size, just because it has master link doesn't mean much, master link just makes its easy to put together but shortening of the chain requires tool.
Only wish it came with master link. Make sure you buy one with this chain but it works great and looks nice too
This thing looks great. It even comes with a free master link - I didn't see that in the description.However, mine broke after about two hours of use. Not the master link - just it just snapped somewhere in the middle of the chain. What a piece of junk.
So that kind of makes up for it.This chain comes with its own easy-install link. Very nice touch. It's super easy to put on and take off.I will continue to purchase this model from now on.
Not much to say about a bike chain. It's a cheap bike chain, was easy to size and easy to install. It's a little heavy. I'm not sure I'd use it on my bike, but for my lightly-used son's bike, it's fine.
I have a bike for each kind of weather. I put this chain on my bike for the rain. I lube it between rides but it doesn't rust. It's perfect for my needs.
The only problem is that it does squat for rust protection. I live in central PA and it rains here all the time. This is my every-day commuting bike and is constantly out in the elements. Chains are always rusting out on me. Lubes wash away, mud gets in there. Bad situation.Anyway, this chain has been used and rained on with only parafin wax on it for three months now and doesn't show any rust whatsoever.
I was tired of replacing rusty chains that couldn't stand up to the abuse of rentals. I needed to replace come chains that were starting to get stiff links and this chain stood out to me as a good candidate. I eventually rented/lent these bikes out and the chains looked new even after a few months. Not as smooth as  the blue or gold chains due to their anti corrosion coating but they do seem to last longer and can handle storage better.
Ordered them for my brothers MTB. Fits like a glove and very simple to install. Good well made chain for a good price.
This product is very Easy to Install and Remove unwanted links. The chain is silver with little shine. As far as it being rust proof, well only time will tell
Answer: yes