Was M2 written by a company 's British employee and written by M3
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.nationality ns:m.07ssc .
?x1 a ns:business.employer .
M2 ns:film.film.written_by ?x0 .
M2 ns:film.film.written_by M3
}