Assertion: ribbed moraine | /r/CapableOf | form a series of ribs perpendicular
Facets:
Source sentences:
text: Rogen moraines or ribbed moraines are a type of basal moraines that form a series of ribs perpendicular to the ice flow in an ice sheet.
text: Rogen moraines or ribbed moraines are a type of basal moraines that form a series of ribs perpendicular to the ice flow in an ice sheet.