There are pages that use Wikipedia material. See Category:Pages with some Wikipedia text. Those pages have the {{wikipedia}} template on them.

Those pages often use citation templates from Wikipedia. The templates categorized in this category were created by following some of the red links found on the Template:Citation page. The wikitext for that template, and its component templates, was copied from Wikipedia: Template:Citation, etc.. There are many templates that make that main template work. This link pulls them up.

Some Wikipedia info:

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