Was M3 's Mexican child influenced by M0 and M1 and influenced by a American person
SELECT count(*) WHERE {
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x0 ns:influence.influence_node.influenced_by M0 .
?x0 ns:influence.influence_node.influenced_by M1 .
?x0 ns:people.person.nationality ns:m.0b90_r .
?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent M3 .
?x1 a ns:people.person .
?x1 ns:people.person.nationality ns:m.09c7w0
}