Assertion: crab | /r/HasProperty | covered with thick exoskeleton
Facets:
value: generally
type: MANNER
Source sentences:
text: Crabs are generally covered with a thick exoskeleton, composed primarily of highly mineralized chitin, and armed with a single pair of chelae (claws).
text: They are generally covered with a thick exoskeleton and have a single pair of claws.