Assertion: fertilizer's manure | /r/ObjectUse | used for century
Facets:
value: as a fertilizer for farming
type: PURPOSE
Source sentences:
text: Animal manure, such as chicken manure and cow dung, has been used for centuries as a fertilizer for farming.
text: Manure has been used for centuries as a fertilizer for farming, as it is rich in nitrogen and other nutrients which facilitate the growth of plants.