Was M2 a employer of a film producer 's American employee
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.nationality ns:m.09c7w0 .
?x1 a ns:film.producer .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}