Assertion: fjord | /r/MadeOf | glacier
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: It is formed by a glacier which washes away the bedrock of an area as it tumbles down.
text: The fjords were formed by glaciers that through several ice ages have shaped the landscape.
text: Fjords are usually formed by glaciers that move, causing the trench-like structure, and eventually being filled with sea-water.