question: Were M3 and M4 founded by a American founder of M0 and M1
query: SELECT count(*) WHERE {
  ?x0 ns:organization.organization_founder.organizations_founded M0 .
  ?x0 ns:organization.organization_founder.organizations_founded M1 .
  ?x0 ns:people.person.nationality ns:m.09c7w0 .
  M3 ns:organization.organization.founders ?x0 .
  M4 ns:organization.organization.founders ?x0
  }