question: Did M1 found M2 , found M0 's employer , found M3 , and found M4
query: SELECT count(*) WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
  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
  }