5004
Proponents argue that the central point , that replicating the gene is the object of selection , usefully completes and extends the explanation of evolution given by Charles Darwin before the basic mechanisms of genetics were understood .
 person: Charles Darwin
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: Charles Darwin