Assertion: tropical cyclone | /r/HasProperty | formed
Facets:
Source sentences:
text: A post-tropical cyclone is formed when the typical characteristics of a tropical cyclone are replaced with those of extratropical cyclones, otherwise known as extratropical transition.
text: The tropical cyclone is formed when a transfer of water vapour and heat from the warm ocean to the overlying air occurred primarily by evaporation from the surface of the sea.