Assertion: public aquarium | /r/CapableOf | keep nightlight
Facets:
value: on backup generators
type: TRANSITIVE-OBJECT
value: in case of power outages
type: PURPOSE
Source sentences:
text: Public aquariums, for instance, not only use nightlights in their sea dragon tanks, but keep those nightlights on backup generators in case of power outages because the dragons get so upset when the lights go out that they shoot to the top of their tanks and begin to “spy hop”—that is,