What did M0 , M1 , and M2 write and a person 's child and parent write
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.written_by ?x1 .
?x0 ns:film.film.written_by M0 .
?x0 ns:film.film.written_by M1 .
?x0 ns:film.film.written_by M2 .
?x1 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x2 .
?x1 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x2 .
?x2 a ns:people.person
}