Was M1 a Mexican film producer that influenced M3 and influenced a film editor
SELECT count(*) WHERE {
?x0 a ns:film.editor .
M1 a ns:film.producer .
M1 ns:influence.influence_node.influenced ?x0 .
M1 ns:influence.influence_node.influenced M3 .
M1 ns:people.person.nationality ns:m.0b90_r
}