digraph links {
   eventseries -> event -> proceedings -> paper -> citation -> paper -> proceedings -> event
   event -> homepage
   event -> eventseries [ label="part of the series"  href="https://www.wikidata.org/wiki/Property:P179"]
   homepage ->  event [ label="Event PID" color="green"  ]
   proceedings ->  event [ label="is proceedings of/Event PID" color="green" ] href="https://www.wikidata.org/wiki/Property:P4745"
   paper ->  event [ label="Event PID" color="green" ]
   paper -> author [ label="author" href="https://www.wikidata.org/wiki/Property:P50"]
   citation -> event [ label="Event PID" color="green" ]
}