What film editor that influenced M1 was a founder and employee of M2 and M3
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.editor .
?x0 ns:influence.influence_node.influenced M1 .
?x0 ns:organization.organization_founder.organizations_founded M2 .
?x0 ns:organization.organization_founder.organizations_founded M3 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company M3
}