question: Was M2 a company 's British employee 's employer
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.nationality ns:m.07ssc .
  ?x1 a ns:business.employer .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
  }