Question: a photo messaging application used for impermanent (self-deleting) photos, developed by an american internet entrepreneur named the youngest billionaire in the world in what year?
Sentence (from "Timeline of Snapchat"): This is a timeline of Snapchat, a photo messaging application used for impermanent (self-deleting) photos, developed by Evan Spiegel and Bobby Murphy, and the developing company Snap Inc.
Relevant evidence: Yes