Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: Can these balls be stacked? How high before they topple over?
Document: my 10 month old loves to roll balls and loves to bounce this ball. i like that it is durable.
Got this for my infant. She loves it. Rubber bouncy balls are a must for babies. Great buy for sure.
I bought this ball for my baby son since he's into bouncy balls and there weren't any for sale near our local stores. It's a ball. It bounces. It shouldn't cost nearly as much as it does! I was desperate so I bought it anyway, knowing it was incredibly overpriced. It is a little deflated as the other reviews mentions, but it otherwise is exactly as I expected it to be.
All the balls I looked at for Christmas said they were for 3+, so I loved that the Melissa & Doug is for 2+. I'm not sure what the difference is, but that is why I picked this one. The ball is printed neatly and higher quality than the ones in the &#34;ball pit&#34; at Target and Toys R Us. I looked at both places.
we have one of those cheap big bin balls you get a most stores. Wanted an other ball for our 14 month old and bought this one. We were figuring with the name brand we would get more for our money. It was thinner than the other one and this did make it lighter but we don't plan on letting it outside thinking it may get a hole in it. The printing seems good and the ball was about 12 inches across.
Not as cheap as your typical Wal-Mart balls... but doesn't have the weird latex smell. Doesn't pick up a lot of dirt and is easy to hold (surprised that our daughter can actually pick it up with one hand sometimes (16 months)). She LOVES this ball and plays with it every day. It is nice and light and would be difficult to get hurt with (she actually loves to have it bounced off her head... which we of course discovered accidentally).
this ball is lightweight and perfect for my one year old. the colors are eyecatching. she loves it. i ahve to add two more words :)
ball, look no further, this ball is for you.
We have brought this with us to the pool, beach, and playground countless times in the four months since I purchased it. It's gotten a lot of use from my three-year-old and one-year-old and their friends, and the colors (which are true to the picture - red with bright yellow) are still vibrant and none of the graphics have begun to fade.
This toy was as described. Bright colors attractive. Great toy for little ones. This was purchased as a gift. Well pleased.
Answer: no