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Importantly , in humans , vitamin D is mainly derived from endogenous production of vitamin D 3 from ultraviolet ( UV ) radiation exposure to the skin while a small part ( < 10 % ) is obtained via dietary intake of dairy products and fatty fish ( 1 ) .
 Chemical: vitamin D; Chemical: vitamin D 3
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: vitamin D; Chemical: vitamin D 3