question: Was M6 a Chinese person whose employer employed M0 , M1 , M2 , M3 , M4 , and M5
query: SELECT count(*) WHERE {
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person M5 .
  M6 a ns:people.person .
  M6 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
  M6 ns:people.person.nationality ns:m.0d05w3
  }