Assertion: protozoan's structure | /r/CapableOf | call flagellum
Facets:
value: to propel themselves
type: PURPOSE
Source sentences:
text: Flagellates use a long whip-like structure called a flagellum to propel themselves, while amoeba-like forms have a soft, flexible cell membrane, and are able to move over surfaces by flowing along, producing pseudopods — foot-like projections.