Assertion: river | /r/Causes | erosion
Facets:
value: in its youthful stage
type: TEMPORAL
value: in the water-course
type: LOCATION
Source sentences:
text: In its youthful stage the river causes erosion in the water-course, deepening the valley.
text: In its youthful stage the river causes erosion in the water-course, deepening the valley.