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: Are the blades of this fan made of metal or plastic?
Document: I had this 3-speed, olive green metal fan when I was a youngster, and it lasted through many warm summer nights. The relaxing 'hornet' sound put me to sleep in no time. Since those early years, the fan has been slightly modified. Instead of the 'original' three green metal blades, it now has five plastic black blades, and the switch is now located on the rear motor assembly, and not on the base in front of the fan.
This is a quality fan - made entirely of metal (blade is one piece solid plastic), beautiful design and looks, moves a lot of air and is very quiet. The pictures do not do it justice, this is truly an item that is more impressive when you get it in your hands.
I currently own three Vornado fans. They are well designed and move a lot of air for their size. This particular fan is a reproduction of the model they made in the late 1940's. It has their &#34;Vortex&#34; design which channels air for maximum velocity. The fan is mostly made of metal, save for the blade and gold portion of the base, which are plastic.The fan will move quite a bit of air given it's diminutive size.
I own an original Vornado fan made in the 1940's that looks identical to this new one. The only visible difference is the addition of a rear finger guard. Very authentic retro style, and probably one of the finer looking fans from this era.The reason I rated it at 4 stars is this new model has a plastic blade, but is all steel otherwise. Side by side my 40's model will outperform it. With a metal blade this fan would be any easy 5 stars.
When it arrived, it didn't work. I noticed the fan blade was getting caught, and tried to push it back in. No good.I had to pull the grill off, take the blades off (one solid piece of plastic), and reposition it, so that it would go all the way on.
This fan is really cool looking. I love the green color. I agree with the other reviewers regarding the plastic at the base. Furthermore the fan blades are plastic as well. I feel it does not push enough air (ie it should have a higher setting). I also wish the cord was attached to the base instead of the fan itself as it is less attractive. It should also have a handle to help in carrying it. The high setting to me is too loud.
The entire fan is metal. Except the blade and cheesy emblem. They made one improvement over the original, the safety grill is much better.
After a review of the instructions (imagine reading those) it would seem they have made the fan simple to remove the grille and give a quick cleaning, a nice feature compared to some fans that you can never get clean because the plastic covers are glued on.
I bought this fan to replace a Patton Air Circulator fan. While this Vornado is smooth, mostly metal, and looks really cool, it does not move as much air as a big Patton fan.However, Patton fans are now made in China, and they are terrible. This Vornado runs smoothly, like the fan has been balanced, and on its high setting is comparable to a Patton fan.I like this fan a lot. Cool retro styling, smooth operation, almost silent on its low setting.
And it def has a different hum to it. The lowest setting is almost silent, in my opinion. I love that it's all metal, and the vintage design. Yes the 2 logos are plastic (bottom and middle of fan), and I wish it weren't.. but I still love it and definitely recommend!
Answer: yes