Assertion: bat's sense | /r/HasProperty | useful
Facets:
value: in murky rivers
type: LOCATION
value: in the darker depths
type: LOCATION
value: for searching for prey
type: PURPOSE
value: especially
type: DEGREE
Source sentences:
text: Their eyes are on the topside of their body and their mouth and gills can be found underneath, so in the darker depths or murky rivers this electromagnetic sense is especially useful for searching for prey.