question: Did M2 's founder and employee write M3 's prequel and edit M0 and M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film M0 .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.writer.film ?x1 .
  ?x0 ns:organization.organization_founder.organizations_founded M2 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  ?x1 ns:film.film.sequel M3
  }