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The shell model , developed in 1949 by Maria Goeppert-Mayer and others , allowed some additional features to be explained , in particular the so-called magic numbers .
 person: Maria Goeppert-Mayer
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: Maria Goeppert-Mayer