63803
Ronald Fisher and Sewall Wright originally defined it as " the number of breeding individuals in an idealised population that would show the same amount of dispersion of allele frequencies under random genetic drift or the same amount of inbreeding as the population under consideration " .
 person: Ronald Fisher; person: Sewall Wright
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Ronald Fisher, Sewall Wright 
Answer:
 person: Ronald Fisher; person: Sewall Wright