Question:  What is the area of the place which is famous for the home of Frank A. Vanderlip and his family?
Facts:
Beechwood (Vanderlip mansion) is the home of Frank A. Vanderlip
Beechwood (Vanderlip mansion) contains Briarcliff Manor
Briarcliff Manor, New York has an area of 5.9 sqmi
Answer: 5.9 sqmi