Question: Grit, Guts and Gumption had a foreword written by the businessman and philanthropist who served two years in prison for what infraction?
Sentence (from "Rajat Gupta"): Rajat Kumar Gupta (] ; born 2 December 1948) is an American businessman and philanthropist who served a two-year term in U.S. federal prison for insider trading.
Relevant evidence: Yes