question: Which company founded by M1 and founded by M2 , M3 , and M4 was founded by 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 .
  ?x0 ns:organization.organization.founders M5
  }