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This care was especially shown though his dedication to support them though their grieving , over the death of their dear friend and fellow pupil , Tilda Curran , who died of cancer aged just 15 , in 2011 .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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