public Graph creatGraph(String filePath){
    Map<String, Set<String>> result = MarvelParser.parseData(filePath);
    Graph newGraph = new Graph();
    for(String book : result.keySet()){
      for(String hero: result.get(book)){
        Graph.GraphNode heroNode = newGraph. new GraphNode(hero);
        newGraph.addNode(heroNode);
        for(String childHero: result.get(book)){
          Graph.GraphNode childHeroNode = newGraph. new GraphNode(childHero);
          Graph.Edge newEdge = newGraph. new Edge(heroNode,childHeroNode,book);
          newGraph.addEdge(heroNode,childHeroNode,newEdge);
        }
      }
    }
    return newGraph;
  }