Assertion: tub's filter | /r/HasProperty | dirty
Facets:
value: extremely
type: DEGREE
value: in some cases
type: TEMPORAL
Source sentences:
text: If the filter is particularly dirty, all-natural cleaning products can be used in conjunction with this method.
text: Cracks or holes can also happen from closing a valve after the filter while the pump is running, or in some cases when an undersized filter is extremely dirty.