question: Did M1 and M6 found a company , found M2 , M3 , and M4 , and found M5
query: SELECT count(*) WHERE {
  ?x0 a ns:business.employer .
  M1 ns:organization.organization_founder.organizations_founded ?x0 .
  M1 ns:organization.organization_founder.organizations_founded M2 .
  M1 ns:organization.organization_founder.organizations_founded M3 .
  M1 ns:organization.organization_founder.organizations_founded M4 .
  M1 ns:organization.organization_founder.organizations_founded M5 .
  M6 ns:organization.organization_founder.organizations_founded ?x0 .
  M6 ns:organization.organization_founder.organizations_founded M2 .
  M6 ns:organization.organization_founder.organizations_founded M3 .
  M6 ns:organization.organization_founder.organizations_founded M4 .
  M6 ns:organization.organization_founder.organizations_founded M5
  }