Assertion: dust cloud | /r/HasProperty | common occurrence
Facets:
value: in the springtime
type: TEMPORAL
value: relatively
type: DEGREE
value: on mars
type: LOCATION
Source sentences:
text: But dust clouds are a common occurrence on Mars; before that storm, a smaller-scale tempest kicked up the impressive plumes in this new photo, taken in April by the European Space Agency's (ESA) Mars Express.
text: Dust clouds like this are relatively common and are part of the Saharan Air Layer, but this particular plume of dust is highly concentrated.
text: Dust clouds are a common source of explosions, causing an estimated 2,000 explosions annually in Europe.
text: Dust clouds blowing east from Asia are a common occurrence in the springtime, but last month's million-ton dust cloud was surprisingly large and long-lasting.