Assertion: beetle's presence | /r/HasProperty | concern
Facets:
value: to producers
type: TRANSITIVE-OBJECT
value: to horse owners
type: TRANSITIVE-OBJECT
value: because of the large amounts of cantharidin
type: CAUSE
Source sentences:
text: The presence of such swarms in alfalfa at harvest is of concern to producers and horse owners because of the large amounts of cantharidin contained in these congregations.