Assertion: hornwort | /r/CapableOf | act as filter
Facets:
value: by absorbing bits of fish waste
type: MANNER
value: in a tank
type: LOCATION
Source sentences:
text: Hornwort acts as a filter in a tank.
text: Hornwort acts like a filter by absorbing bits of fish waste in the water as well as compounds of nitrogen thus keeping the water clean.