Assertion: estuary | /r/HasProperty | drowned river valleys
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Timothy M. Kusky characterizes lagoons as normally being elongated parallel to the coast, while estuaries are usually drowned river valleys, elongated perpendicular to the coast.
text: estuaries, 56 are drowned river valleys, 65 are lagoons and 16 are fjords.