Assertion: woodlouse's pair | /r/HasProperty | mounted on stalk
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Typical crustacean characteristics include a segmented body with a hard exoskeleton, two pairs of antennae and a pair of compound eyes, which are often mounted on stalks.
text: Most crustaceans have a pair of compound eyes, which are often mounted on stalks.