Question: When was the British former professional boxer born who competed from 1971 to 1980 who had a bout with Jorge Victor Ahumada?

Related documents: [0]  [DOC] Jorge Victor Ahumada (born 1946) is a former professional boxer. Notable fights include four bouts with Victor Galindez, (one of which was a world title challenge at the Madison Square Garden in New York, New York), a title bout with Bob Foster (Foster's last title defense) which ended in a draw, and a bout with John Conteh for the WBC Light Heavyweight Championship. [END] 
[1]  [DOC] John Anthony Conteh, {'1': ", '2': ", '3': ", '4': "} (born 27 May 1951) is a British former professional boxer who competed from 1971 to 1980. He held multiple light-heavyweight championships, including the WBC title from 1974 to 1978; and the European, British, and Commonwealth titles between 1973 and 1974. Conteh was awarded an MBE in 2017 for services to boxing at the Queen's Birthday Honours. [END]  
Answer: 27 May 1951
27 May 1951