I opened
https://en.wikipedia.org/wiki/Integral
and copied the URL from "Download as PDF" to change the "writer" parameter to "rdf2latex". When the page
https://en.wikipedia.org/w/index.php?title=Special:Book&bookcmd=rendering&return_to=Integral&collection_id=0a8673ae2f477e51733960aadefe7577e53a81dd&writer=rdf2latex
finished the process I got this:
Generation of the document file has failed.
Status: Rendering process died with non zero code: 1
Return to Integral
Version: unspecified
Severity: blocker