question: What cinematographer and editor of M0 , M1 , and M2 was a screenwriter 's employer 's employee
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.cinematographer.film M0 .
  ?x0 ns:film.cinematographer.film M1 .
  ?x0 ns:film.cinematographer.film M2 .
  ?x0 ns:film.editor.film M0 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.editor.film M2 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
  ?x2 a ns:film.writer
  }