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: can this welding work perfectly on 240v 50hz ???
Document: I use this welder with all my welding needs. I welded floor pans in my car, doing body work with it, I even made my own tools with this welder. And going to use to fix a trailer. Works best with gas, definitely recommended.
bought welder to fix my sons broken 4 wheeler that a local welding shop wanted 150 bucks to fix. Worked great and since have tackled lots of little progects and lots more planed.
Very nice welder, it makes nice welds. It took me a while to get the hank of it, but after I did, my welds are looking very nice. I'm doing auto body work with and I tell, the best investiment I've ever did after my shop air compressor!
very good welder it burns the wire very nice the wire and the welds are very smoot  i love it
This mig is great. I got mine refurbished and have run 20lb of wire through it without a hiccup. Smooth feeder. Welds as well as my buddies hobart. A bit more plastic than a miller.
This is a great welder for the money. The craftsmanship is solid and the welder performs as well as any I've used (Miller, Lincoln). Buy a cart, this thing is heavy.
Answer: no