Assertion: dinosaur's origin | /r/CapableOf | remain obscure
Facets:
value: for many years after its discovery
type: TEMPORAL
value: largely
type: DEGREE
Source sentences:
text: For many years after its discovery, the deeper evolutionary origins of Triceratops and its close relatives remained largely obscure.
text: However, because no other reptiles from the Mesozoic Era had preserved body coverings such as feathers, the origin of birds remained obscure.