question: Was M1 employed by a employer of a director , editor , and star of M0 and employed by M2 and M3
query: SELECT count(*) WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x1 ns:film.actor.film/ns:film.performance.film M0 .
  ?x1 ns:film.director.film M0 .
  ?x1 ns:film.editor.film M0 .
  M1 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
  M1 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  M1 ns:people.person.employment_history/ns:business.employment_tenure.company M3
  }