Network properties.

For each network, the number of nodes and edges is given. If multiple edge types are present in the network, separate counts are given for each edge type, denoting the number of edges of the specific type as well the number of nodes having an edge of that type. The XYZ-network and the ABZ-network have the same node and edge count as the A- and B-edges are the directed versions of the X- and Y-edges. Similarly, the reduced PGS-network has the same node and edge count as the PGS-network.