premise: Fanny Talbot (née) Browne (1824–1917) was a landowner and philanthropist, and a friend and correspondent of the influential art critic John Ruskin. She is noted for donating the first property—4.5 acres of land known as Cliff of Light ("Dinas Oleu" in Welsh), at Barmouth, Gwynedd—to the National Trust.
hypothesis: Fanny Talbot was alive in 1918.
reason: It's definitely incorrect because she died in 1917, the system probably doesn't understand how to parse the (birth year- death year) construction so it got confused when it saw 1917.