There are currently A LOT of relationships we could have between entities that we don't have. (yet)
TBA

• A publisher-publisher relation "is a trademark of"
• Edition-publisher "owns the copyright of" should have a date-attribute
• Author-edition needs "has copyright by" (author can hold ©) preferably with an date-attribute attached
• An edition can link to a work as containing it, to another edition as being a revision of it
  but not to another edition (or a containing work there-in) as "containing parts" (ie if an edition contains a passage, section, of another (which itself is "reprinted by permission of [publisher]")
• Author-edition/work should have a "commonly attested to"/"believed to be written by" (term is changeable)
• Work-work should have "is a [language] translation of work"
• Author-work should have "author translated(provided translation of) work"