5683
This was partly because , for religious reasons , extinction was not believed possible until later proved so by Georges Cuvier , and partly because many scientists doubted that the dodo had ever existed .
 person: Georges Cuvier
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Georges Cuvier