question: Did a company acquire M1 , M2 , and M3 , acquire M4 , acquire M5 , and acquire M6
query: SELECT count(*) WHERE {
  ?x0 a ns:business.employer .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M1 .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M2 .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M3 .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M4 .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M5 .
  ?x0 ns:organization.organization.companies_acquired/ns:business.acquisition.company_acquired M6
  }