Was a actor influenced by M4 and influenced by a British film producer M2
SELECT count(*) WHERE {
?x0 a ns:film.producer .
?x0 ns:people.person.nationality ns:m.07ssc .
M2 a ns:film.actor .
M2 ns:influence.influence_node.influenced_by ?x0 .
M2 ns:influence.influence_node.influenced_by M4
}