Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Are these cones plastic, rubber or vinyl?
Document: Cones need some weight and the Plastic is too thin. These cones are not able to be placed without securing them down and consequently use is Very Limited!
They're bright and very sturdy; really quite thick plastic and look great. Great product, great value for money.
These a very high quality cones. Mud, being stepped on by horses and examinedby coyotes has not phased them.
not the best cones in the world but effective enough for a soccer, flag football, or to train people
The cones are a nice quality and are just as you'd expect. They are lightweight and easy for my son to carry/move around.
The cones are good and sturdy, but the color faded in the sun. Not a bad buy, I just didn't like that they are not as bright.
Cones are very good. our play ground is very near to the mountains and there is lot of wind but cones are good and stable.
These marker cones certainly held up and will be of good use for many years to come. They are well worth the price.
These cones keep out children occupied. They are always out playing with them. I'm glad I made this purchase. Awesome
These cones are exactly what we were looking for to set some flag football boundaries for the kids at our company tailgate. They are not to heavy but not too light.
Answer: yes