Did M1 and M6 influence M3 , M4 , and M5 and influence a Mexican screenwriter that M1 influenced
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x0 ns:influence.influence_node.influenced_by M1 .
?x0 ns:people.person.nationality ns:m.0b90_r .
M1 ns:influence.influence_node.influenced ?x0 .
M1 ns:influence.influence_node.influenced M3 .
M1 ns:influence.influence_node.influenced M4 .
M1 ns:influence.influence_node.influenced M5 .
M6 ns:influence.influence_node.influenced ?x0 .
M6 ns:influence.influence_node.influenced M3 .
M6 ns:influence.influence_node.influenced M4 .
M6 ns:influence.influence_node.influenced M5
}