Assertion: nurse shark's predator | /r/CapableOf | pose constant menace
Facets:
value: to other, smaller sharks
type: TRANSITIVE-OBJECT
value: to small fish
type: TRANSITIVE-OBJECT
Source sentences:
text: In most ways, Stethacanthus was an unremarkable prehistoric shark of the late Devonian and early Carboniferous periods-; relatively small (a maximum of three feet long and 20 or so pounds) but a dangerous, hydrodynamic predator that posed a constant menace to small fish as well as other, smaller sharks.