Did a employer of M2 's German executive producer employ M0 and M1
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M0 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M1 .
?x1 ns:film.producer.films_executive_produced M2 .
?x1 ns:people.person.nationality ns:m.0345h
}