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Devon archaeologist Ralegh Radford excavated at the site from 1933 through to 1938, and he pioneered the hypothesis that Tintagel Castle had been a monastery during Period II. He came to this conclusion based upon some similarities in the structures Master of Arts  the Early Medieval elements of Tintagel Castle and the seventh century monastery at the site of Whitby Abbey in Yorkshire.
 Ralegh Radford, Master of Arts 
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: place of death, place of birth, education degree, education institution 
Text: {0} 
Answer:
 Ralegh Radford, Master of Arts 