question: Was M2 directed by a Mexican parent of a child of M1 , executive produced by M3 , and produced by M4
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 .
  ?x0 ns:people.person.nationality ns:m.0b90_r .
  ?x1 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent M1 .
  M2 ns:film.film.directed_by ?x0 .
  M2 ns:film.film.executive_produced_by M3 .
  M2 ns:film.film.produced_by|ns:film.film.production_companies M4
  }