Assertion: dust storm's atmosphere | /r/CapableOf | become dark
Facets:
Source sentences:
text: and, when I got ready and came out of the house, I noticed that, the entire atmosphere was becoming dark, and that dark brown clouds were enveloping the entire atmosphere.
text: Within a twinkle of an eye, I saw the entire atmosphere becoming dark and gloomy, dust was being carried by the air, and the air was full of dust for us to inhale.