Assertion: cerebral palsy's muscle | /r/CapableOf | become stiff
Facets:
value: quickly
type: MANNER
value: for those with cerebral palsy
type: OTHER
value: over time
type: TEMPORAL
Source sentences:
text: These muscles become stiff or spastic, over time due to lack of movement.
text: For those with cerebral palsy, muscles quickly become stiff, making movement much harder and, in the most serious of cases, causing tremors.