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: what balls work best, tennis balls, soft baseballs or what
Document: These are way to inacurate. Buy the heater slider soft lite balls because they are seamless. The seams catch in the machine and make the balls fly all over the place.
What can I review? I bought them for the pitching machine I have. They work just fine. I wish they were heavier but for what the unit is the balls work perfect. Kids really enjoy them.
We purchased the Trend Sports Slider Lite Pitching Machine and Synthetic Leather Pitching Machine Baseballs and have been very happy with its performance. The slider lite baseballs look and feel like the real thing and work well with the pitching machine.
i like that they are soft and less possiblity of hurting anyone. would like for the price to be a bit lower, expensive for when you really need more then a dozen.
These are softer and liter than an official hardballs. The pitching machine can only use theses types of baseballs, good for practice...
We were fortunate to find a second hand Sports Slider Pitching Machine for our two grandsons,  I ordered the Synthetic Leather baseballs and we tried it out over the weekend. My 7 year old grandson said &#34;it was the most fun he'd ever had&#34; at our house!We were all very pleased!
These balls worked great in our pitching machine. The outside cover feels like a real ball, but doesn't weigh very much. They come out of the machine fine and when you hit them the sound just like a real ball, but don't go very far, and if one happens to hit you, they don't hurt at all. Great for regular practice fielding and hitting without a machine and off a tee.
Wish it was included in the purchase of the machine instead of having to order separate. But they do work.- and are fun.
I bought this to accompany the pitching machine of the same make. Definitely makes the whole system work well. The mechanism works on the power of the pitching machine to shimmy the ball down and the time it takes to do this, about 5 seconds between pitches, is the time it takes for the wheel in the machine to get back up to speed to throw an accurate pitch. If you're getting the Slider lite ball machine, I wouldn't hesitate to purchase this as well.
Answer: no