question: Was a actor 's parent 's actor M1
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x1 .
  ?x1 a ns:film.actor .
  M1 ns:film.actor.film/ns:film.performance.character ?x0
  }