@prefix pr: <http://www.wikidata.org/prop/reference/> .
@prefix wdref: <http://www.wikidata.org/reference/> .

wdref:b4e7d4ecb4b500d28206ee3b6c21f93ee0227f0b pr:P854 <https://www.deepin.org/en/2021/06/29/deepin-20-2-2/> .