Instruction: Given a question and the related document, predict if the question is answerable based on the information provided in the document. Output only yes or no.

Input:
Question: How many keys come with this lock?  None are pictured.
Document: I should have saved the packaging to return this monster. The shaft is way too thick to fit through the lock, and it's gigantic and heavy. Great product for locking up something industrial, but not at all what I needed.
This is one heavy duty lock. I had no questions as to whether it would be secure enough. Opens easily and closes easily. I would recommend this to friends who want to feel safe about what they're locking up.
I've bought this to protect my mountain bike after the other ones got stolen from garage. I was truly impressed how solid this lock looks and feel....It is big. It makes thieves lose their incentive to break it just by the look.
Just the sight of this lock should deter any funny business. One of MasterLock's more robust efforts. Very nice. A lock you'll be proud of.Best suited for motorcycles. Bring your own chain. Lugging a chain around not an option? Then check out MasterLock's 79DPF cable. Cheaper than Kryptonite, Superman, but just as formidable. Because in the end, if they really want your stuff they're going to get it. If I'm not mistaken, a Bic pen was all that was needed a couple years ago.
Who'da thunk that one up?
These locks are extremely tough and weather resistant. Would not be an easy one to cut and the long shank is great
I used it for my UPack relo cube, because I had to leave it on the street for four days. I understand that it is possible to cut it off, but it would take one seriously motivated thief because its shaft is very thick. It would make me think twice about trying to cut it off (but I'm not a thief).
Answer: no