Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: How sharp are they?
Document: not sharp when you recieve them but you can remedy this small problem great for cosplay and dressing up as ninja
They are good sharp lightweight easy to use i like the grip as well not like most i have used in the past
I ordered this for part of my son's Halloween costume thinking it was a toy. The blade is metal and sharp. This should not be sold for children.
great swords. but when i put them in its sheeth because the swords are sharp it cut though the threads of the sheeth, now its open. but other than that the swords are great they held up just great!
Let's be clear, these swords are sharp enough to kill a person. That being said, if you're looking for a sword to practice killing people with, this one is not it. As other reviewers have stated, the sword does loosen with repeated use. Such as stabbing trees and slicing bamboo.
this is not an all positive review.These swords were shorter than expected,but they are long enough.they came not very sharp but they are so easy to sharpen.not a displey they are fully functional.the only problem besides length is the fact that if you stab something repeatedly, they can bend.over all i still have to give 5 stars because they are really great swords, well worth the price.
these swords are light weight and durable, but keep in mind they are not actually made to be fought with. the fabric on the handle seems to be glued on and comes apart real easily. in my opinion these swords are meant for display. the handles are made to deliver a blow, the only reason that i think these swords should be used for the display is the fabric around the handles. the sheath is tough, i have had many sheaths and this one has lasted more then most.
im not sure why there are some bad reviews....looks good, quality is good, my 11yr old son love it....thats all you need....)
i just got these swords from my post office and when i took them out, one's handle just fell off.It seems a metal rod had been welded to the blade.Also, its not full tang.
dont buy this i was warned but didnt listen the swords broke within a week ans they are very small done
Answer: yes