Question: When did the person Kosti Vehanen spend a decade accompanying die?
Sentence (from "30 Days (TV series)"): In each episode, Spurlock, or some other person or group of people, spend 30 days immersing themselves in a particular lifestyle with which they are unfamiliar (e.g. working for minimum wage, being in prison, a Christian living as a Muslim etc.), while discussing related social issues.
Relevant evidence: No