Assertion: horseshoe crab's number | /r/CapableOf | march to extinction
Facets:
value: steadily
type: MANNER
Source sentences:
text: Over the course of the 300 million years that this class survived, a number of species steadily marched to extinction.
text: Over the course of the 300 million years that this class survived, a number of species steadily marched to extinction.