Assertion: leech's sucker | /r/HasProperty | front
Facets:
Source sentences:
text: On land, they move by suction: they suck with the front sucker, then the rear, and that is their locomotion: it is an efficient but not elegant movement.
text: On land, they move by suction: they suck with the front sucker, then the rear, and that is their locomotion: it is an efficient but not elegant movement.
text: Leeches move by looping using their front and back suckers.