question: Was a Chinese employee of M1 and M2 M0
query: SELECT count(*) WHERE {
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M1 .
  M0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
  M0 ns:people.person.nationality ns:m.0d05w3
  }