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The founding of the hospital was first proposed by King Vajiravudh , who , having observed the operations of the Red Cross Hospital of Japan during his travels , thought it beneficial to establish a hospital in the service of the Red Cross ( then the Red Unalom Society ) .
 Vajiravudh, Cross, Cross
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Vajiravudh, Cross, Cross