Assertion: chlorofluorocarbon | /r/HasProperty | large source of chlorine
Facets:
value: potentially
type: DEGREE
Source sentences:
text: (Several other scientists, including Ralph Cicerone, Richard Stolarski, Michael McElroy, and Steven Wofsy had independently proposed that chlorine could catalyze ozone loss, but none had realized that CFCs were a potentially large source of chlorine.)