70096
In 1952 , Geoffrey Colin Shephard generalized the idea of polygons to the complex plane , where each real dimension is accompanied by an imaginary one , to create complex polygons .
 Geoffrey Colin Shephard
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Geoffrey Colin Shephard