question: Was M2 founded by M3 , founded by M4 , M5 , M6 , and M7 , and founded by a Swedish person
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:people.person.nationality ns:m.0d0vqn .
  M2 ns:organization.organization.founders ?x0 .
  M2 ns:organization.organization.founders M3 .
  M2 ns:organization.organization.founders M4 .
  M2 ns:organization.organization.founders M5 .
  M2 ns:organization.organization.founders M6 .
  M2 ns:organization.organization.founders M7
  }