question: Were M1 , M3 , M4 , M5 , and M6 founded by a person and founded by M2
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  M1 ns:organization.organization.founders ?x0 .
  M1 ns:organization.organization.founders M2 .
  M3 ns:organization.organization.founders ?x0 .
  M3 ns:organization.organization.founders M2 .
  M4 ns:organization.organization.founders ?x0 .
  M4 ns:organization.organization.founders M2 .
  M5 ns:organization.organization.founders ?x0 .
  M5 ns:organization.organization.founders M2 .
  M6 ns:organization.organization.founders ?x0 .
  M6 ns:organization.organization.founders M2
  }