Assertion: kidney | /r/CapableOf | act as filter
Facets:
value: for the blood
type: TRANSITIVE-OBJECT
Source sentences:
text: The kidneys act as a filter.
text: The kidneys act like a filter to clean the waste from you’r blood.
text: The kidneys do the filtering and then urine is sent to the bladder where, when there's enough, we get the urge to pee.
text: The kidneys play a key role in this system, acting as filters for the blood.