question: Was a Mexican person that a person influenced , M3 influenced , and a costume designer influenced M2
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_costumer_designer .
  ?x1 a ns:people.person .
  M2 a ns:people.person .
  M2 ns:influence.influence_node.influenced_by ?x0 .
  M2 ns:influence.influence_node.influenced_by ?x1 .
  M2 ns:influence.influence_node.influenced_by M3 .
  M2 ns:people.person.nationality ns:m.0b90_r
  }