Did a film editor that influenced M3 and was influenced by M4 's parent edit M1 and M2
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:film.editor.film M1 .
?x0 ns:film.editor.film M2 .
?x0 ns:influence.influence_node.influenced M3 .
?x0 ns:influence.influence_node.influenced_by ?x1 .
?x1 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child M4
}