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The materials most often used in double bass construction for fully carved basses ( the type used by professional orchestra bassists and soloists ) are maple ( back , neck , ribs ) , spruce ( top ) , and ebony ( fingerboard , tailpiece ) .
 plant: maple; plant: spruce
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: maple, spruce 
Answer:
 plant: maple; plant: spruce