Because she was only 10 years old in 1890 , her mother , Emma of Waldeck and Pyrmont , was the regent until Wilhelmina 's 18th birthday in 1898 .
Head entity: emma of waldeck and pyrmont Q57664 13 14 15 16 17
Tail entity: wilhelmina Q150747 23
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P25