Example for Q42 (ru: "Дуглас Адамс")
Actual escaping produced by https://www.wikidata.org/entity/Q42.nt:
It seems like UTF8 bytes get encoded as individual unicode characters, a kind of double-escaping. This is likely a problem with EasyRdf, but might have been fixed upstream already.
The discussion at https://github.com/njh/easyrdf/issues/175 seems related.
The relevant spec is http://www.w3.org/2001/sw/RDFCore/ntriples/#sec-issues.