Assertion: comfrey's stem | /r/HasProperty | hollow
Facets:
Source sentences:
text: The leafy stem, 2 to 3 feet high, is stout, angular and hollow, broadly winged at the top and covered with bristly hairs.
text: The leafy stem, 2 to 3 feet high, is stout, angular and hollow, broadly winged at the top and covered with bristly hairs.