What was written by M1 , written by M2 , produced by a British person , and executive produced by M0
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.executive_produced_by M0 .
?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
?x0 ns:film.film.written_by M1 .
?x0 ns:film.film.written_by M2 .
?x1 a ns:people.person .
?x1 ns:people.person.nationality ns:m.07ssc
}