question: Did M4 acquire a company whose founder edited M1 , M2 , and M3
query: SELECT count(*) WHERE {
  ?x0 a ns:business.employer .
  ?x0 ns:organization.organization.founders ?x1 .
  ?x1 ns:film.editor.film M1 .
  ?x1 ns:film.editor.film M2 .
  ?x1 ns:film.editor.film M3 .
  M4 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x0
  }