Assertion: cirrostratus | /r/CapableOf | produce arc
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: They sometimes produce white or coloured rings, spots or arcs of light around the Sun or Moon, that are known as halo phenomena.
text: They sometimes produce white or coloured rings, spots or arcs of light around the sun or moon that are known as halo phenomena.