Assertion: woodwind instrument | /r/CapableOf | defeat the object
Facets:
Source sentences:
text: The Materials: It is not economically viable (as far as I know) to extract natural oils from wood on a large scale - it would destroy the wood, which defeats the object of cutting the tree down in the first place - so a substitute must be found, and ideally the oil must closely match the properties of the natural oil.