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 big is the green ball?
Document: I got the green, medium ball. It is small as others have noted but comfortable and just about right for me. I have large hands. The ball bounces but not as much as I would have thought and not enough to be a problem. I like the look and feel of this ball.
I have large hands and I can't exercise my whole hand at one time. I have to use two fingers at a time and the thumb separately. It works, but I would rather have something that I can exercise my whole hand at one time. I find the green ball to be a good starter resistance even though is rated as medium resistance.
Really helped me get my hand back in shape after the injury.consistent and the feel is good.I use the green and it is a firm grip - I am a strong motorcycle rider and green is the right level
I stopped use it.. its been while.. .but it sure can bounce and everything. Really worked on my hands hand... it is nice texture...and feelings... great products...was planning on buying other types.. but haven't done that.... but green one work well for me.
If I remember to warm up when I first get in I really notice a difference in longevity, and even if I forget a five minute break with a few sets makes my hands feel much better and ready to work at high speeds again.After using the medium (green) for awhile I've found my hands are noticeably stronger and it's too easy, so the muscles do get stronger and I'll be getting the next step up soon.
These ball hand exercisers work very well, and are fun to use.Thanks.
I keep the ball near my desk and take a minute (or less) to do this whenever  I think of it.
Not at all what I thought it was .....placed order and got just ONE ball, thought there was at least 3. Would not recommend
Purchased ball for my mother due to her arthritis mother says the ball works well with the exercises  her physician prescribed  to her
perfect amount of give; doubles as a bouncy ball; durable; does not collect dirt too easily and is easily washed.fast shipping.
Answer: yes