Are descriptions for these available anywhere? (The articles on https://en.wikipedia.org/wiki/Universal_Conceptual_Cognitive... and https://en.wikipedia.org/wiki/Abstract_Meaning_Representatio... are not very helpful.) I did find an interesting description of UMR https://github.com/umr4nlp/umr-guidelines/blob/master/guidel... , which looks like it might be intended as a generalization of AMR and quite in line w/ what the project is looking for.