222047
Albert Medal On 12 January 1929 , Kavanaugh was swimming at Bondi Beach approximately from the shore when fourteen-year-old Colin Stewart was attacked by a shark and dragged underwater .
 Kavanaugh
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Kavanaugh