Assertion: echidna | /r/CapableOf | use its spines
Facets:
value: to protect themselves
type: PURPOSE
value: once an adult
type: TEMPORAL
Source sentences:
text: Once an adult the echidna uses its spines to protect themselves from these predators.
text: When it feels attacked, the echidna will burrow itself into the ground or curl itself into a ball using its spines as a method of defence against the predator.