Which person whose employer produced M2 was M1 's cinematographer
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:film.cinematographer.film M1 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x1 ns:film.producer.film|ns:film.production_company.films M2
}