Assertion: desertification | /r/DefinedAs | process
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: In fact, desertification is usually defined as a process that happens to land that is already normally arid (dry) or semi-arid.
text: Desertification, for instance, can be described as the process in which dryland is degraded permanently.
text: Desertification is usually defined as a process that happens to land that is already normally arid (dry) or semiarid and it's not just caused by drought.