arangosh> var examples = require("org/arangodb/graph-examples/example-graph.js");
arangosh> var graph = examples.loadGraph("routeplanner");
arangosh> graph._betweenness();
[ 
  { 
    "germanCity/Hamburg" : null, 
    "germanCity/Cologne" : null, 
    "germanCity/Berlin" : null, 
    "frenchCity/Paris" : null, 
    "frenchCity/Lyon" : null 
  } 
]