Was M1 employed by M2 and employed by M0 's sibling 's country of nationality
SELECT count(*) WHERE {
?x0 ^ns:people.person.nationality ?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 M0 .
FILTER ( ?x1 != M0 ) .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0 .
M1 ns:people.person.employment_history/ns:business.employment_tenure.company M2
}