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Individuals observing Rare Disease Day took part in walks and press conferences to raise public awareness of rare diseases , organized fundraisers , and wrote en masse to government representatives ; health-related non-profit organizations across numerous countries also held events , gatherings , and campaigns .
 Rare
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rare