Complex sentence: An entity can be identified at any arbitrary level of granularity-DOI names can identify a journal, an individual issue of a journal, an individual article in the journal, or a single table in that article.
Split into simpler sentences: An entity can be identified at any arbitrary level of granularity. This means that, for instance, DOI names can identify a journal, an individual issue of a journal, an individual article in the journal or a single table in that article.