Was M0 a male German Mexican sibling of M1
SELECT count(*) WHERE {
FILTER ( M0 != M1 ) .
M0 ns:people.person.gender ns:m.05zppz .
M0 ns:people.person.nationality ns:m.0345h .
M0 ns:people.person.nationality ns:m.0b90_r .
M0 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 M1
}