126609
The forest is primarily lodgepole pine , along with several species of spruce , fir , and aspen .
 spruce, fir, aspen
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:
 spruce, fir, aspen