Did M3 employ M0 's British Canadian employee
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.nationality ns:m.07ssc .
?x0 ns:people.person.nationality ns:m.0d060g .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}