question: Were M2 and M4 executive produced by a film editor , edited by M1 's child , and executive produced by M3
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?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.edited_by ?x1 .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.executive_produced_by M3 .
  M4 ns:film.film.edited_by ?x1 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.executive_produced_by M3
  }