Assertion: flea | /r/CapableOf | drive their feet
Facets:
value: into the ground
type: TRANSITIVE-OBJECT
Source sentences:
text: Fleas drive their feet into the ground, gripping it with spines, and then suddenly release this ‘coiled spring’ to catapult into the air.
text: This "lever-effect" allows fleas to drive their feet onto the ground, and the sudden release of the "coiled spring" hurls the insect forwards and upwards, scientists report in the Journal of Experimental Biology.