I wrote an answer to the following question.
It was deleted as "Original Research". However, the only thing I did was to download the document and check its properties. It is a very simple process that anyone can do, and I've even listed the single step needed to do so if someone was interested in checking it out by him or herself.
The close reason says that "It is up to the answerer to provide valid, verifiable and potentially replicable evidence.", and I clearly did so. From my answer:
You can check this by yourself by downloading the original PDF in the page linked from the question and checking its metadata (or properties, in some readers) using your non-sucky PDF reader of choice. For Adobe Reader on Windows, you just need to press Control+D while the document is open.
I don't understand the reasoning behind it. I'm aware that answers that require some expertise to check are not ok, but to check this one no specific knowledge is needed.