Was M3 a production company whose German employee produced M1 and M2
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films M1 .
?x0 ns:film.producer.film|ns:film.production_company.films M2 .
?x0 ns:people.person.nationality ns:m.0345h .
M3 a ns:film.production_company .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}