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Dominant oak tree species include Live oak ( " Quercus agrifolia " ) , " Blue oak ( " Quercus douglasii " ) , and Black oak ( " Quercus kelloggii " ) .
 Live oak ( " Quercus agrifolia " ), Blue oak ( " Quercus douglasii " ), Black oak ( " Quercus kelloggii " )
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:
 Live oak ( " Quercus agrifolia " ), Blue oak ( " Quercus douglasii " ), Black oak ( " Quercus kelloggii " )