Hi Eric, 

Karly's description is really nice on this. 

Only thing I would add to Karly and Stefano's response, is that the records seem to be described differently for different authors. I could be reading it wrong, but you also might like the derived from link too. That would look as follows:

https://w.wiki/4wD5

SELECT ?personLabel ?describedAtLabel ?url ?derivedFrom WHERE {
  ?person wdt:P106 wd:Q49757;
    wdt:P135 wd:Q213457;
    p:P485 ?object.
  ?object ps:P485 ?describedAt.
  OPTIONAL { ?object pq:P973 ?url. }
  OPTIONAL {
    ?object prov:wasDerivedFrom ?obj.
    OPTIONAL { ?obj pr:P854 ?derivedFrom. }
  }
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
}
ORDER BY (?person)

Again, describing the retrieving the statements in more granular detail once you've retrieved them. 

The resulting table looks okay to me, but has a few more links. But interested to hear how it goes. 

Best,
Ross