question: Were M2 and M4 acquired by M0 's American founder 's employer and acquired by M3
query: SELECT count(*) WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x1 ns:organization.organization_founder.organizations_founded M0 .
  ?x1 ns:people.person.nationality ns:m.09c7w0 .
  M2 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x0 .
  M2 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M3 .
  M4 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company ?x0 .
  M4 ns:organization.organization.acquired_by/ns:business.acquisition.acquiring_company M3
  }