Was a cinematographer influenced by M1 , M2 , M3 , and M4
SELECT count(*) WHERE {
?x0 a ns:film.cinematographer .
?x0 ns:influence.influence_node.influenced_by M1 .
?x0 ns:influence.influence_node.influenced_by M2 .
?x0 ns:influence.influence_node.influenced_by M3 .
?x0 ns:influence.influence_node.influenced_by M4
}