7841
In 1835 , after Matthew’s book , Edward Blyth published a description of the process as a mechanism preserving the unchanging essence of stable species .
 person: Edward Blyth
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: Edward Blyth