File tree1Path = new File(args[0]);
File tree2Path = new File(args[1]);
try {
TreeReaderFactory trf = new LabeledScoredTreeReaderFactory();
TreeReader tR1 = trf.newTreeReader(new BufferedReader(new FileReader(tree1Path)));
TreeReader tR2 = trf.newTreeReader(new BufferedReader(new FileReader(tree2Path)));
Tree t1 = tR1.readTree();
Tree t2 = tR2.readTree();
Set<Constituent> t1Diff = markDiff(t1,t2);
System.out.println(t2.pennString());
System.out.println();
for(Constituent c : t1Diff)