Instruction: The music room contains the following instruments: Drums, Violin, Cello, Gong, Viola, Xylophone, Guitar, Ukelele and Piano. You need to put percussion on the left hand side and strings on the right. First, group the instruments into percussion and strings.

Response: Violin, Cello, Viola, Guitar, Ukelele are string instruments. Piano, Xylophone, Drums, Gong are percussion instruments.