Assertion: echidna's spine | /r/HasProperty | modified hairs
Facets:
Source sentences:
text: One of the more surprising echidna facts is that these spines are in fact modified hairs.
text: The spines of echidnas are actually modified hair made of keratin.
text: The echidnas have spines, which are hair modifications.
text: The spines, which may be up to 50 mm (2 in) long, are modified hairs, mostly made of keratin.
text: These spines are modified hairs, similar to that of the porcupines.
text: The spines are modified hairs," she explained.
text: The spines, which may be up to 50 mm long, are modified hairs, mostly made of keratin.