Assertion: waterfall | /r/HasProperty | created
Facets:
Source sentences:
text: Waterfalls are created when water touches a half block (1 foot high block), which can be created by using a hammer.
text: A waterfall is created when river water erodes the weaker earth, rock, or sand of its original stream bed, pushing the rock aside and along with the water flow over time (generally, eons).