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

Input:
Question: is it strong
Document: This was a gift, and originally, I was somewhat disappointed that it was not automatic, but upon further review, that was my mistake, and the product was perfectly described. It was solid and hefty, a great strong pocket knife; might get one for myself. Great service.
Knife looks great its a nice strong knife has a sharp blade wont break down but you cant get that blade out fast enough so you need to ajust  it then you got a great knife for the price looks damn nice to me any way
I was worried that the quality of the knife wouldn't be great when I ordered it, but I was wrong. It's ridiculously well made for the price, and a very strong knife. It's really a good all-purpose knife, actually. You really can't get anything much better for $7. The materials are high quality, the handle is comfortable, and it flips open nicely.
This knife is of decent quality, especially for the price (I paid $7.00). It's not the strongest form of stainless steel you can get, but it's definitely strong, sharp, and functional. It's the first folding knife I've owned, and I'm impressed. The locking mechanism is also decent for the price. If you're not experienced with knives and aren't looking to spend a lot of money, get this knife.
This knife isn't bad, considering the price you pay for it. The blade comes fairly sharp and can cut well. The clip is sturdy and feels strong, but can feel bulky in the hand. I didn't have any problems opening or closing the knife but the thumb stud doesn't aid much in opening the knife. The locking mechanism feels sturdy and durable as well. The knife is also flashy and is an eye catcher.
Just received the knife today and I am very pleased. The knife fits very comfortably in the palm of my hand and has a clean sleek look to it. I bought this knife to carry with me to work and to be used as an all around maintenance tool, the blade is a little tight so it dose not flick open with a wrist snap (easily adjustable) and the lock is pretty strong doesn't feel like its gonna fail like most cheap knifes.
when I searched, I typed switch blade. This is not a switch blade and is a disclaimer. Still, it is a pretty cool knife.
this thing is too small to hold comfortably in my hand// doesn't flip out easy// not sharp at all// dont buy this
this knife is very sharp out of the box and a great size. hoping to get a sharpening block a bit let down. other that that it is AWESOME
this knife is very nice. I bought it for carrying on me but with how heavy it is i will just use it around the house. The blade opens very easy and locks shut no problem.
Answer: yes