unweighted_equivalent_example :: Graph String String
unweighted_equivalent_example = (buildGraphFromEdges [("e1",("u","v")), ("e2",("u","v"))])
unweighted_equivalent_example :: Graph String String
unweighted_equivalent_example = (buildGraphFromEdges [("e1",("u","v")), ("e2",("u","v"))])
unweighted_equivalent_example = (buildGraphFromEdges [("e1",("u","v")), ("e2",("u","v"))])