Assertion: alamut castle | /r/HasProperty | surrendered to mongol
Facets:
value: under whose leadership
type: OTHER
Source sentences:
text: Imam 'Ala al-Din Muhammad was succeeded by his eldest son Imam Rukn al-Din Khurshah who engaged in a long series of negotiations with invading Mongols, and under whose leadership, the Alamut castle was surrendered to the Mongols.