Were M1 , M2 , M3 , and M4 founded by a film producer 's sibling 's sibling 's spouse
SELECT count(*) WHERE {
?x0 ns:people.person.spouse_s/ns:people.marriage.spouse|ns:fictional_universe.fictional_character.married_to/ns:fictional_universe.marriage_of_fictional_characters.spouses ?x1 .
?x1 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 ?x2 .
?x2 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 ?x3 .
?x3 a ns:film.producer .
FILTER ( ?x0 != ?x1 ) .
FILTER ( ?x1 != ?x2 ) .
FILTER ( ?x2 != ?x3 ) .
M1 ns:organization.organization.founders ?x0 .
M2 ns:organization.organization.founders ?x0 .
M3 ns:organization.organization.founders ?x0 .
M4 ns:organization.organization.founders ?x0
}