question: Was M1 a person that was influenced by M3 and influenced a actor that played M0
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character M0 .
  M1 a ns:people.person .
  M1 ns:influence.influence_node.influenced ?x0 .
  M1 ns:influence.influence_node.influenced_by M3
  }