question: Was a British child of M1 's executive producer a Mexican actor 's child
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.nationality ns:m.07ssc .
  ?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
  ?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x2 .
  ?x1 ns:film.producer.films_executive_produced M1 .
  ?x2 a ns:film.actor .
  ?x2 ns:people.person.nationality ns:m.0b90_r
  }