question: Which company did M1 found , M2 and M3 found , M4 and M5 found , and M6 found
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:business.employer .
  ?x0 ns:organization.organization.founders M1 .
  ?x0 ns:organization.organization.founders M2 .
  ?x0 ns:organization.organization.founders M3 .
  ?x0 ns:organization.organization.founders M4 .
  ?x0 ns:organization.organization.founders M5 .
  ?x0 ns:organization.organization.founders M6
  }