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+The miserables.json file contains the weighted network of coappearances of
+characters in Victor Hugo's novel /Les Miserables/. Nodes represent characters
+as indicated by the labels, and edges connect any pair of characters that
+appear in the same chapter of the book. The values on the edges are the number
+of such coappearances. The data on coappearances were taken from D. E. Knuth,
+"The Stanford GraphBase: A Platform for Combinatorial Computing",
+Addison-Wesley, Reading, MA (1993).
+
+The group labels were transcribed from "Finding and evaluating community
+structure in networks" by M. E. J. Newman and M. Girvan.