Assertion: urea's use | /r/CapableOf | generate controversy
Facets:
value: because of issues
type: CAUSE
Source sentences:
text: The continued use of Premarin has generated controversy because of issues associated with the industrial use of animals required to produce a supply of the drug; information regarding concerns over the “pee line” collection of urine from mares to produce Premarin is available on a number equine advocacy web sites.