Assertion: folk music's drum | /r/CapableOf | call the kotsuzumi
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Source sentences:
text: The instruments used are the taiko (太鼓) stick drum, a big hourglass-shaped drum called the ōtsuzumi (大鼓), a smaller hourglass-shaped drum called the kotsuzumi (小鼓), and a bamboo flute called the nohkan (能管).