Was a film 's producer influenced by M0 and M1 and influenced by a screenwriter
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x0 ns:influence.influence_node.influenced_by ?x2 .
?x0 ns:influence.influence_node.influenced_by M0 .
?x0 ns:influence.influence_node.influenced_by M1 .
?x1 a ns:film.film .
?x2 a ns:film.writer
}