Assertion: hedgehog's spine | /r/CapableOf | lie flat
Facets:
value: usually
type: DEGREE
value: almost
type: DEGREE
Source sentences:
text: When relaxed their spines lay almost flat.
text: The spines lay flat until the tenrec feels threatened; they lift the spines up with a muscle called the panniculus carnosus.
text: These spines usually lie flat and harmless -- so much so that it is possible to pet a hedgehog.