Assertion: crustacean's abdomen | /r/HasProperty | flanked by uropods
Facets:
value: often
type: TEMPORAL
value: to form a tail fan
type: PURPOSE
Source sentences:
text: The Abdomen bears Pleopods (appendages used for carrying eggs and swimming), and ends in a Telson, which bears the Anus, and is often flanked by Uropods (posterior abdominal appendage) to form a Tail Fan.