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In mathematics , an elliptic surface is a surface that has an elliptic fibration , in other words a proper connected morphism to an algebraic curve , almost all of whose fibers are elliptic curve s. The fibers that are not elliptic curves are called the singular fibers and were classified by Kunihiko Kodaira .
 Kunihiko Kodaira
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Kunihiko Kodaira