question: Did M1 acquire M2 , M3 , M4 , M5 , and M6 and acquire a art director 's employer
query: SELECT count(*) WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x1 a ns:film.film_art_director .
  M1 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired ?x0 .
  M1 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M2 .
  M1 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M3 .
  M1 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M4 .
  M1 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M5 .
  M1 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M6
  }