Random triples
| Subject | Object | 
|---|---|
| gptkb:greenhouse_effect | carbon dioxide | 
| gptkb:greenhouse_effect | ozone | 
| gptkb:greenhouse_effect | water vapor | 
| gptkb:Greenhouse_Effect | carbon dioxide | 
| gptkb:Greenhouse_Effect | nitrous oxide | 
| gptkb:greenhouse_effect | nitrous oxide | 
| gptkb:Greenhouse_Effect | chlorofluorocarbons | 
| gptkb:Greenhouse_Effect | methane | 
| gptkb:greenhouse_effect | chlorofluorocarbons | 
| gptkb:Greenhouse_Effect | water vapor | 
| gptkb:Greenhouse_Effect | ozone | 
| gptkb:greenhouse_effect | methane |