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Starting in the early twentieth century , there was a large growth in population on the western edges of the city moving to the San Fernando Valley and out into the Conejo Valley in eastern Ventura County .
 San Fernando Valley, Conejo Valley, Ventura County
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 San Fernando Valley, Conejo Valley, Ventura County