question: Which company was founded by M1 , M2 , and M3 , was founded by M4 , and employed M5
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:business.employer .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M5 .
  ?x0 ns:organization.organization.founders M1 .
  ?x0 ns:organization.organization.founders M2 .
  ?x0 ns:organization.organization.founders M3 .
  ?x0 ns:organization.organization.founders M4
  }