Laverne Smith (born September 12, 1954) is a former American football running back who played for the Pittsburgh Steelers of the National Football League. He was drafted by the Pittsburgh Steelers in the fourth round of the 1977 NFL Draft. He played college football at the University of Kansas and attended Wichita Southeast High School in Wichita, Kansas.

Based on that paragraph can we conclude that this sentence is true?
He retired because he got bored
It's impossible to say