Assertion: flute's tube | /r/HasProperty | simple
Facets:
Source sentences:
text: The willow flute, also known as sallow flute (Norwegian: seljefløyte, Swedish: sälgflöjt or sälgpipa, Finnish: pitkähuilu or pajupilli, Latvian: kārkla stabule, Lithuanian: švilpynė), is a Nordic folk flute, or whistle, consisting of a simple tube with a transverse fipple mouthpiece and no finger holes.