Was M1 employed by M2 , M3 , M4 , M5 , and M6 and employed by a person 's country of nationality
SELECT count(*) WHERE {
?x0 ^ns:people.person.nationality ?x1 .
?x1 a ns:people.person .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company M5 .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company M6
}