Did a employee of M0 and M1 produce M2
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films M2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M0 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M1
}