Through the analysis of the data in Figs. ), (b), and (c), it becomes clear that the host metal, the SA element, as well as the structure of the surface sites all impact CO 2 activation on the SAAs. Thus, it is challenging to establish simple (e.g. linear) correlations describing an effective CO 2 activation. In particular, the above discussion highlights that interesting scenarios might escape the overall (global) trends. To obtain such correlations, termed rules, we collected the 24 candidate descriptive parameters described in Table for each of the 199 structures and used this information as input for the SGD AI analysis.