Assertion: skeletal system's bone | /r/CapableOf | become thin
Facets:
value: as an individual ages
type: TEMPORAL
Source sentences:
text: Calcium from cancellous bones is lost, and therefore, bones become thin, weak, and fragile.
text: As an individual ages, the bones become thin and weak, and fractures occur more easily.
text: Bones lose calcium and become thin and brittle.