Assertion: lobster's exoskeleton | /r/HasProperty | covered with numerous sharp spines
Facets:
value: at the base of their antennae
type: LOCATION
value: often
type: TEMPORAL
value: on their shells
type: LOCATION
Source sentences:
text: These species lack claws but their exoskeletons are often covered with numerous sharp spines at the base of their antennae and on their shells.