Question: What was the unofficial name of the event that caused the man who defeated the great John L. Sullivan to rescind his retirement after hearing of the outcome?
Sentence (from "USAT John L. Clem"): In 1941 she was acquired by the U.S. Army and assigned the name USAT "John L. Clem, about which time she was also briefly assigned a US Navy ID, AP-36.
Relevant evidence: No