Assertion: frog's skull | /r/CapableOf | run the length of their body
Facets:
value: to drive through mud
type: PURPOSE
value: to drive through dirt
type: PURPOSE
Source sentences:
text: While the amphibians possess no arms or legs, they are powerful diggers, using a strong skull and muscles that run the length of their body to drive through dirt and mud like a piston in a car engine.