Was M1 a film producer that M3 founded and M0 's sibling was employed by
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 M0 .
FILTER ( ?x0 != M0 ) .
M1 a ns:film.producer .
M1 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M1 ns:organization.organization.founders M3
}