Assertion: moon's surface | /r/CapableOf | indicate intense geological activity
Facets:
value: in miranda's past
type: TEMPORAL
Source sentences:
text: The observed surface has patchwork regions of broken terrain, indicating intense geological activity in Miranda's past, and is criss-crossed by huge canyons, believed to be the result of extensional tectonics; as liquid water froze beneath the surface, it expanded, causing the surface ice to split, creating graben.