Question: The River Bourne is the name given to a Thames tributary in northwest Surrey, England which has a longer tributary, the Windle Brook, that rises nears Bagshot Park, a royal residence located near Bagshot, a village 11 mi south of Windsor and approximately 11 mi north west of Guildford, owned by who?
{'answer': 'Crown Estate', 'supporting_facts': [['River Bourne, Addlestone', 0], ['Bagshot Park', 1]]}