Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: How many tubes come in the package?
Document: Seriously, it's a bike tube. Correctly labeled and fits 20" bike. Buy the tire liners so you can stop buying so many tubes!
Fits my Rubbermaid wagon wheel just fine. My only issue that it doesn't come in sexier colors. Let's face it...inner tubes are like underwear for wheels and should be available in pink or something.
The tubes came on time and are very thick and nice. They hold air as they are supposed to. :)
We purchase a lot of tubes for the kids in the neighborhood for their bikes. Always great to have on hand and these are a great price! !
They fit the folding Schwinn bikes. Fast shipping. I would buy from this company again. The tubes seem better than what came with my folding Schwinn bike.
Bought two of these to replace my sons cheap bike tubes and tires. They worked like a charm and he was a happy boy again. They arrived quickly at about three days, I believe. I would buy again.
I bought two tubes; they both leaked even after I used SLIME to make sure they wouldn't. Ended up buying two Bell tubes with factory sealant, and they worked perfectly. The Schwinn tubes were an absolute waste of money.
I purchased three of these to replace leaking tubes in an aging jogging buggy. They were inexpensive, easy to install and have held up well since the installation (a couple of months now). I have no idea how their quality might compare with other tubes but these fit my needs perfectly.
Which is more than I can say for other, similarly price tubes I have tried.Only for a casually converted BMX bike for my little brother's bike. I could feel the strength as soon as I took it our of the box, the PSI suggested on the tires are a bit large for these tubes, though.40-65 PSI (what it says on the tires I got) was reaching the tipping point of too much air.
One inner tube went flat overnight, there were no thorns, nails, or holes. It just leaked through the steam and then popped after 20 miles of riding. Second inner tube exploded after I replaced it. I inflated it to the proper PSI went to wash my hands and heard it explode from inside my house. I regret buying these cheap inner tubes... don't waste your money, buy thorn resistant inner tubes.
Answer: yes