question: What employee of M0 , M1 , M2 , and M3 was a British editor of M5 , M6 , and M7
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.editor.film M5 .
  ?x0 ns:film.editor.film M6 .
  ?x0 ns:film.editor.film M7 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
  ?x0 ns:people.person.nationality ns:m.07ssc
  }