Assertion: valley | /r/HasProperty | wider and flat bottoms
Facets:
value: with a shape
type: OTHER
value: due to breadth
type: CAUSE
Source sentences:
text: Due to the weight and breadth of glaciers, the valleys formed are wider and flat bottoms with a shape looking like a U. Examples of valley glacier include the Fjaerland Fjord in Norway and Mattertal in Switzerland.