She was the identical twin sister of Princess Sophie of Bavaria , mother of Emperor Franz Joseph I of Austria and Emperor Maximilian I of Mexico .
Head entity: emperor maximilian i of mexico Q84192 21 22 23 24 25
Tail entity: princess sophie of bavaria Q57653 7 8 9 10
Relation (head \u2192 tail): P25
Inverse relation (tail \u2192 head): P40