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

Input:
Question: airplane legal?
Document: So I was a bit short on money when I killed my last shinai, so I decided to cheap out and buy these. I pulled them apart to prep them for normal wear and found that they had no sakigomu. Because of this, They are not tournament legal and my old dojo would not even allow you to practice with them. Serious bummer.On top of all that, when I actually measured them, they were only 40" (102ish cm) in length.
this set is a decent set however it lacks all of the pieces its missing the metal square to help hold it together other than that it is a good set have not broken them yet
these are so inexpensive, its not too bad on your wallet when they break. they are very sturdy and tough enough to last a while.
super cheap pcs. of junk .more like prop kendo shinai than anything else. i guess i should have known that by the cheap price
picture shows 2 swords, only recieved 1, clever use of "SET". purchased 4 total and was charged for shipping twice, have yet to recieve 3 others.
it was destroyed within the first 15 minutes of the first practicethe leather was paper, and not a functional grip, I am very disappointed in the product
if you want to beat the heck out of each other these are a lot of fun! I try to work with them often just to get a work out
i think they are great. the leather is a little cheap but to get 2 of these for the price of one is prefect.
When i got this package it looked like there was only one in there, but they fit both in there. They are a lot thinner than the ones i already have, but they are good training swords, the lether feels fake, but good at the same time, and the hand guards are stiff and relyable.
We'll see how that goes.
Answer: no