_:nf6a4355205aa405086d78c666bb2e647xb3
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://git.skewed.de/count0/graph-tool/-/blob/412abc9abb8dc095b39dd10698183f19f1948cc5/src/graph_tool/inference/blockmodel.py>