Assertion: arachnid's exoskeleton | /r/HasProperty | formed of chitin
Facets:
Source sentences:
text: The arachnid exoskeleton is formed of chitin, a nitrogen-containing carbohydrate associated with a protein.
text: The arachnid exoskeleton is formed of chitin, which results in a rigid but pliable external skeleton able to protect and support the soft body parts.