Was a company whose British employee executive produced M0 and M1 M3
SELECT count(*) WHERE {
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:people.person.nationality ns:m.07ssc .
M3 a ns:business.employer .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}