Denis Hale Johnson (July 1, 1949 – May 24, 2017) was an American writer best known for his short story collection "Jesus' Son" (1992) and his novel "Tree of Smoke" (2007), which won the National Book Award for Fiction. He also wrote plays, poetry, journalism, and non-fiction.

Can we draw the following conclusion?
After winning the award for Fiction he traveled the world for ideas for his next book
It's impossible to say