Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Is this regulation size men's basketball
Document: We bought this to replace an old basketball. I loved the idea of it being &#34; Never Flat&#34;. So far, it has lived up to its' name! Good size for our 8 year old daughter too...not too big for her to use.
This basketball feels great in the hands. Official size of the NBA. Looks and feels better than the Offical NBA Game ball imo. Agree that it could be pumped a little more the first time out of the box. Would like for it to be a a little more firm, like the Official NFL game ball...
The name of this product is 'Spalding Never Flat Outdoor Official Size Basketball'. I want to congratulate the makers for their commitment to truth in advertising. To wit:1) This *IS* a basketball.2) Although I don't know the exact dimensions and tolerances which make a basketball &#34;official sized&#34;, I can say definitively that this basketball will go through a basketball hoop.
This is a great basketball for the money.
So far this has been a great basketball. I bought it for by husband, and he seems to really like it!
it great basketball never have to put air on it thank you very much for it I love it a lot
It is definately NOT a never flat basketball. Some of the air went out and it never left from inside my house!
Great basketball. Very rarely have to pump. He uses it everyday and leaves out in the weather and doesn't affect it. Buy one!!! !
This is a great basketball, good purchase, it has yet to evem seem flat, its played with ever day, greeeeeeeeat
This basketball was purchased for my grandson, hoping that it would stand up to the abuse that boys put on sports equipment. It has done that and more.
Answer: yes