129944
The body of the tambura was traditionally made of the wood of maple , poplar or plum trees , while today it 's mostly made of spruce or fir trees .
 maple, poplar, plum, spruce, fir
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:
 maple, poplar, plum, spruce, fir