question: Were M1 and M6 influenced by a actor 's sibling and influenced by M2 , M3 , M4 , and M5
query: SELECT count(*) WHERE {
  ?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 ?x1 .
  ?x1 a ns:film.actor .
  FILTER ( ?x0 != ?x1 ) .
  M1 ns:influence.influence_node.influenced_by ?x0 .
  M1 ns:influence.influence_node.influenced_by M2 .
  M1 ns:influence.influence_node.influenced_by M3 .
  M1 ns:influence.influence_node.influenced_by M4 .
  M1 ns:influence.influence_node.influenced_by M5 .
  M6 ns:influence.influence_node.influenced_by ?x0 .
  M6 ns:influence.influence_node.influenced_by M2 .
  M6 ns:influence.influence_node.influenced_by M3 .
  M6 ns:influence.influence_node.influenced_by M4 .
  M6 ns:influence.influence_node.influenced_by M5
  }