Was M2 influenced by M1 's actor , influenced by M3 and M4 , and influenced by a person
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x1 ns:film.actor.film/ns:film.performance.character M1 .
M2 ns:influence.influence_node.influenced_by ?x0 .
M2 ns:influence.influence_node.influenced_by ?x1 .
M2 ns:influence.influence_node.influenced_by M3 .
M2 ns:influence.influence_node.influenced_by M4
}