Did M2 employ M3 , M4 , M5 , and M6 , employ a Canadian person , and employ M7
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:people.person.nationality ns:m.0d060g .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M4 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M5 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M6 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M7
}