Table is the result for PrVO 4 (mp-19169 on the Materials Project ), which has a zircon-type structure and has attracted attention due to its redox activity as photocatalyst . Its space group I4 1 {amd was retrieved as the second scored one. Both I4 1 {amd and the first scored I4 1 22 have the tetragonal crystal system but with the point groups of D 4 and D 4h , respectively. These space groups are thus hierarchically familiar with each other. Note also that the difference between the first and second scores are small compared to those between the second score and the third, forth, and fifth scores. Next, the top-3 scored local atomic environments were retrieved correctly. Pr(1) and V(1) are attributed to [METAL], and O(1) is to [NONMETAL], respectively. Note that CLICS cannot distinguish which retrieval has come from which atom, but only can grasp the concepts within the given abstraction level of elements and predefined geometric attributions . The forth and fifth scores are much lower than those of the top-3 correct retrievals, which suggests that the concepts have been embedded distinctively on the feature space.