Question: What is the date of death of Keanolani's mother?
Sentence (from "Abigail Maheha"): At a young age, she was chosen to attend the Chiefs' Children's School (later renamed the Royal School) taught by the American missionary Amos Starr Cooke and his wife, Juliette Montague Cooke, alongside her half-sister Jane Loeau and fourteen of her royal cousins.
Relevant evidence: No