question: Was a film distributor that M1 founded acquired by M2 and M3 and acquired by M4 , M5 , M6 , and M7
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_distributor .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M2 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M3 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M4 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M5 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M6 .
  ?x0 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M7 .
  ?x0 ns:organization.organization.founders M1
  }