Assertion: salamander's body | /r/CapableOf | occur within the envelope of skin
Facets:
value: often
type: TEMPORAL
value: by flexures of the entire body
type: MANNER
Source sentences:
text: Caecilians move through soil by a process called concertina locomotion, in which the body alternately folds and extends itself along its entire length, often occurring within the envelope of skin as well as by flexures of the entire body.