6484
Naval career Brock was the eldest son of Commander Osmond de Beauvoir Brock of Guernsey and he joined the Navy in 1882 .
 person: Brock; person: Osmond; person: Brock
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Brock; person: Osmond; person: Brock