Question: In which year was this American heavyweight boxer born who was active in the 1950s through the 1970s, and was defeated by the former Canadian professional boxer George Chuvalo?
Sentence (from "Cleveland Williams"): Cleveland "Big Cat" Williams (June 6, 1933 – September 3, 1999) was an American heavyweight boxer who fought in the 1950s through the 1970s.
Relevant evidence: Yes