Assertion: eiderdown | /r/HasProperty | filled with feather
Facets:
value: traditionally
type: OTHER
Source sentences:
text: Duvets are another form of quilt, traditionally filled with feathers, though since the late 20th century often made of synthetic fibres or down alternatives.
text: This eiderdown is filled with feather and down, it is a double which is designed to just cover the top sleeping