Assertion: auk's habitat | /r/CreatedBy | canal
Facets:
value: to enhance crop production
type: PURPOSE
Source sentences:
text: Unseasonal nests were initiated in years with unusual rainfall patterns, when rainfall extended beyond the normal June–October period, and when rainfall volume was higher than normal; or when artificial wet habitats were created by man-made structures such as reservoirs and irrigation canals to enhance crop production.