Question: National Survivors of Suicide Day was designated by which organization, as a day when the friends and family of those who have died by suicide can join together for healing and support, it's day always falls on the Saturday before Thanksgiving, a national holiday celebrated in Canada, the United States, some of the Caribbean islands, and Liberia?
Sentence (from "Thanksgiving"): Thanksgiving Day is a national holiday celebrated in Canada, the United States, some of the Caribbean islands, and Liberia.
Relevant evidence: Yes