question: Was M1 produced by M4 , executive produced by a company 's actor , and executive produced by M2 and M3
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character ?x1 .
  ?x1 a ns:business.employer .
  M1 ns:film.film.executive_produced_by ?x0 .
  M1 ns:film.film.executive_produced_by M2 .
  M1 ns:film.film.executive_produced_by M3 .
  M1 ns:film.film.produced_by|ns:film.film.production_companies M4
  }