Java 核心nlp共指解析：重新映射共指

我一直在尝试使用核心nlp共同参考解析系统。该系统的工作原理如本教程所述。以下是相同的代码：

public static void main(String[] args) throws Exception {
    Annotation document = new Annotation("Barack Obama was born in Hawaii.  He is the president. Obama was elected in 2008.");
    Properties props = new Properties();
    props.setProperty("annotators", "tokenize,ssplit,pos,lemma,ner,parse,mention,coref");
    StanfordCoreNLP pipeline = new StanfordCoreNLP(props);
    pipeline.annotate(document);
    System.out.println("---");
    System.out.println("coref chains");
    for (CorefChain cc : document.get(CorefCoreAnnotations.CorefChainAnnotation.class).values()) {
      System.out.println("\t" + cc);
    }

哪些产出：

CHAIN3-["Barack Obama" in sentence 1, "He" in sentence 1]

我想得到的是一张地图，上面显示

Key | Value
He : Barack Obama
Obama: Barack Obama

---

是否有一个内置的方法来实现这一点，或者我必须对此进行后期处理（不仅仅是地图）？

目前还没有真正的代码。下面是一个片段，它将打印出提及光泽度、位置信息和规范提及：

for (CorefChain cc : document.get(CorefCoreAnnotations.CorefChainAnnotation.class).values()) {
    CorefChain.CorefMention representativeMention = cc.getRepresentativeMention();
    for (CorefChain.CorefMention cm : cc.getMentionsInTextualOrder()) {
      String position = "sentence num: "+cm.sentNum+" position: "+cm.startIndex;
      System.out.println(cm.mentionSpan + "\t" + position + "\t" + representativeMention.mentionSpan);
}

}