Question: Who is Alison Waley's sibling-in-law?
Sentence (from "Alison Waley"): Alison Grant Robinson Waley (29 April 1901 – 10 May 2001) was a New Zealand poet, journalist, artist and writer, best known for her memoir "A Half of Two Lives: A Personal Memoir", a book about her lifelong affair with writer and translator Arthur Waley.
Relevant evidence: Yes