Did M2 influence a person , influence a writer of M0 , and marry M3
SELECT count(*) WHERE {
?x0 ns:film.writer.film M0 .
?x1 a ns:people.person .
FILTER ( M2 != M3 ) .
M2 ns:influence.influence_node.influenced ?x0 .
M2 ns:influence.influence_node.influenced ?x1 .
M2 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses M3
}