Inference in TypeDB blog: social network schema

inference_in_typedb_social_network_schema.tql

define
person sub entity, 
  plays friendship:friend, 
  plays following:follower, 
  plays family:member,
  plays ownership:owner;
page sub entity,
  plays following:followed,
  plays ownership:owned,
  plays parent-page:parent,
  plays parent-page:child;
friendship sub relation,
  relates friend;
following sub relation,
  relates follower,
  relates followed;
family sub relation,
  relates member;
ownership sub relation,
  relates owned,
  relates owner;
parent-page sub relation,
  relates parent,
  relates child;