question: Was a person 's sibling influenced by M0 and M1 , influenced by a film director , and influenced by M2 and M3
query: SELECT count(*) WHERE {
  ?x0 ns:influence.influence_node.influenced_by ?x1 .
  ?x0 ns:influence.influence_node.influenced_by M0 .
  ?x0 ns:influence.influence_node.influenced_by M1 .
  ?x0 ns:influence.influence_node.influenced_by M2 .
  ?x0 ns:influence.influence_node.influenced_by M3 .
  ?x0 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x2 .
  ?x1 a ns:film.director .
  ?x2 a ns:people.person .
  FILTER ( ?x0 != ?x2 )
  }