Did M2 employ a production company 's founder , employ M3 , and employ a sibling of a costume designer
SELECT count(*) WHERE {
?x0 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings ?x1 .
?x1 a ns:film.film_costumer_designer .
?x2 ns:organization.organization_founder.organizations_founded ?x3 .
?x3 a ns:film.production_company .
FILTER ( ?x0 != ?x1 ) .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x2 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M3
}