Assertion: global warming | /r/HasProperty | the subject of a debate
Facets:
Source sentences:
text: Responses to Global Warming Since the 1980s, global warming has been the subject of a debate over the extent and seriousness of rising temperatures.
text: Global warming has been the subject of controversy, substantially more pronounced in the popular media than in the scientific literature, with disputes regarding the nature, causes, and consequences of global warming.