{'carbon dioxide': [2, 0, 5, 6], 'global warming': [3, 0, 1, 0], 'oxides': [0, 0, 3, 11], 'substances': [0, 0, 1, 1], 'methane': [0, 0, 0, 5], 'nitrogen': [1, 1, 0, 2], 'water vapour': [0, 0, 1, 2], 'sulphur': [0, 0, 0, 2]}