question: Did M2 and M3 employ a cinematographer 's American child
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.nationality ns:m.09c7w0 .
  ?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
  ?x1 a ns:film.cinematographer .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
  }