Was M2 's prequel 's German American writer 's child M3
SELECT count(*) WHERE {
?x0 ns:film.writer.film ?x1 .
?x0 ns:people.person.nationality ns:m.0345h .
?x0 ns:people.person.nationality ns:m.09c7w0 .
?x1 ns:film.film.sequel M2 .
M3 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x0
}