Did M3 employ a cinematographer 's sibling , employ a person , and employ a actor
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x1 a ns:film.actor .
?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.cinematographer .
FILTER ( ?x2 != ?x3 ) .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x2
}