Were M3 and M6 founded by M4 and M5 and founded by a American female person 's sibling
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:people.person .
?x1 ns:people.person.gender ns:m.02zsn .
?x1 ns:people.person.nationality ns:m.09c7w0 .
FILTER ( ?x0 != ?x1 ) .
M3 ns:organization.organization.founders ?x0 .
M3 ns:organization.organization.founders M4 .
M3 ns:organization.organization.founders M5 .
M6 ns:organization.organization.founders ?x0 .
M6 ns:organization.organization.founders M4 .
M6 ns:organization.organization.founders M5
}