question: Was M3 executive produced by a film producer and written by a founder of M1 and M2
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x1 ns:organization.organization_founder.organizations_founded M1 .
  ?x1 ns:organization.organization_founder.organizations_founded M2 .
  M3 ns:film.film.executive_produced_by ?x0 .
  M3 ns:film.film.written_by ?x1
  }