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: gravel
Document: We bought this for our 7 year old grand daughter for her birthday. The neighbor kids have them and she loved theirs so we thought she needed her own and we were very pleased that the green machine came in pink!! !
This was a snap to put together. better quality than I expected, my daughter has been tearing the streets up since got it, begs to ride everyday. Make sure your kids are tall enough, ,my other daughter can't ride cause she is too short and she is a tall 6 year old.
This was a present for my daughter's 8th birthday. I was a little worried that she would not enjoy riding this and that she would have trouble controlling it. I was wrong in both cases. She begs to ride it everyday which is sometimes impossible as winter is approaching. She bundles up in her winter gear and takes it for spin anyway and I do mean spin! She learned how to do the 180 spin after only 15 minutes of owning this awesome trike.
This is as much fun now as it was 30 years ago! My girls love it and wouldn't give it up if they had to! Only down fall is that someone hit it with a bike from the back and the pretend muffler pieces broke. I was not happy with that for the price we paid, but what can you do, kids will be kids!
My son really loves his green machine, We wanted to get one for our daughter and found that the pink one is $269.00. We only paid $98.00 for the green one. This is terrible. Why is the pink one so much more expensive???? I want a pink one but refuse to pay so much more for it. waaahhhh. waaahhhh
My daughter loves her "pink" green machine. She has a great time racing at the park and asks to ride it often. As a mother who is looking for fun ways to increase our kids activity and play. . . the "pink" green machine is a fun way to increase play and activity ~ willingly :)My dad said it was pretty easy to put together too!
I purchased the pink green machine for my 6 year old daughter's birthday. She has not received it yet, but she has played on my nephews and  she loved it. Not only does my daughter love it, but my 27 year old sister fell in love with this machine also. My sister also loves riding this product. It is very sturdy and it is a blast to play on.
He has had a great time with the Green Machine, too. He would just rather have a green one.The Green Machine was easy to put together and the directions were easy to follow. I would suggest having an extra person available to help to make the assembly go smoothly. The sturdy steel frame will help this toy last a very long time.
Answer: no