// @author Frank M. Carrano, Timothy M. Henry
// @version 5.0
BasicGraphInterface<String> airMap = new UndirectedGraph<String>();
airMap.addVertex("Boston");
airMap.addVertex("Provincetown");
airMap.addVertex("Nantucket");
airMap.addEdge("Boston", "Provincetown");
airMap.addEdge("Boston", "Nantucket");