question: Was M1 a company that was founded by M0 's editor and employed M3
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film M0 .
  M1 a ns:business.employer .
  M1 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
  M1 ns:organization.organization.founders ?x0
  }