Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: How long does it takes to switch from presta to schrader mode?
Document: This mini bike pump weighs less than other bike frame pumps that I've used in the past. The valve works on both regular (schrader) and presta valves - I have tested on both and it works.This is a  good pump for flat bike tires out on the road.
I loved this thing. No more have to go to pump station just to fill up the bike tires. This is sturdy and looks long lasting. A good useful reasonably priced tool and a must have
I bought and returned this item. The return process was very easy and I was credited right away; the one star is simply for the product itself, not for the company's service.It took a long time to fill our basketball with air and just did an OK job. After both of us pumping for several minutes, we gave up trying to fill the bicycle tire with air.
To be honest when I first saw it I thought this looks cool but I don't think it's going to work very well because of the super small size, turned out to be really powerful and convenient, you can inflate a flat bike tire in 3 or 4 minutes tops, or a sport ball in 30 seconds or less. Also it's made of metal, not cheap plastic so I think this will last a long time.
Very tight fit on inner tubes. When removing from child's 12&#34; bicycle wheel, it ripped the stem off the tube. threw it in the trash after that.
Use this little pump to pump up my basketballs and soccer balls. Good for pumping up bicycle tires as well!
This pump is awesome! I have a $7,000 Trek Madone 7 series ultra light carbon bike and wanted a lightweight pump. Got my first flat a couple of days ago and changed it in less than 5 minutes. I have a $70 Lyzene pump and this one works even better and is lighter. It may not work well for balls and fat tire bikes, but for my road bike, it's the perfect tool (700c x 23c, 125psi).
This mini bike pump is much better than what I was expecting; it's very well-constructed and feels like a more expensive product. It's not hard to use at all, just plug it in and start pumping and it certainly works better than the other mini pump I have, definitely worth the $30 bucks. So thumbs up for this one!
This little bicycle pump is small but it really does the job of airing up a bicycle tire! It is easy to use and small enough to carry with you. I would highly recommend this good pump to everyone!
This is a very useful pump. I like the way it is very compact so it easy to store and keep handy. Being the mother of two boys there is always a need for one between sports balls and bicycles.
Answer: yes