Listen has a sub-event of understand. Trombone is utilised in music. Trombone is not utilised in reduce error. Music is utilised in listen. Listen is utilised in learn. Take walk is not utilised in interest. Trombone is not utilised in something to do on date. Bitch is utilised in letter write. Record is utilised in listen. Take walk is not utilised in letter write. Learn is utilised in interest. Radio is utilised in music. Learn gives rise to intelligence.
Trombone is utilised in learn.