Who did a actor of M3 and M4 marry and a writer of M1 and M2 influence
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x0 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses ?x2 .
?x1 ns:film.writer.film M1 .
?x1 ns:film.writer.film M2 .
?x2 ns:film.actor.film/ns:film.performance.character M3 .
?x2 ns:film.actor.film/ns:film.performance.character M4 .
FILTER ( ?x0 != ?x2 )
}