"It is not a hoax. There is plenty of proof that it exists. It had its picture in three local websites. Therefore, we should have an article about it."
Not.
See for more details on this concept.
There are many items of interest that do exist, and do have reliable sources covering them. But only a brief amount of information can be written about them, and they directly relate to a topic covered in another article. It is preferable to have such information simply added to the article where it best fits. When the information is added to an article, the title it would have, had it been given a standalone article, can then redirect to that section of the article using the formatting "#REDIRECT [[Article#Section]]." See WP:TARGET for more information on this.
When such an article does exist, it is usually suggested that it be merged.
Some good reasons for creating separate standalone articles are:
Some good reasons not to create separate standalone articles are:
Lots of these common words or phrases may also have one or more obscure meanings. When such is the case, it may be useful to create it as a redirect to another title, or as a disambiguation page listing encyclopedic topics using that title.
Many stories are reported in the news just once on a single day, or over a period of a few days, and then are forgotten. They may receive coverage in newspapers in every city and town across a nation, or even throughout the world. But they do just for that short period of time.
Many newspapers are reliable sources. But . And notability is not temporary. News does get shared between news sources, and is often printed in hundreds of papers, covering a large geographic area, identically word-for-word in each paper. So an article may look impressive and pass for being notable if it has 109 references, each from a different paper. But just because you bombard an article with identical sources does not mean it can never be deleted.
This is especially true of biographical articles. If reliable sources cover the person only in the context of a particular event a separate biography is unlikely to be warranted. That person should instead be covered in the article about the event itself.