Assertion: quagga mussel | /r/HasProperty | introduced at lake casitas and westlake lake
Facets:
value: from recreational boating
type: OTHER
value: in california
type: LOCATION
Source sentences:
text: In 2008 the threat of quagga mussels being introduced at Lake Casitas and Westlake Lake in California from recreational boating resulted in the lakes banning the use of outside boats.