transformer.addTransformer(binarizer);
transformer.addTransformer(basicTransformer);
treebank = treebank.transform(transformer);
HeadFinder binaryHeadFinder = new BinaryHeadFinder(op.tlpParams.headFinder());
List<Tree> binarizedTrees = Generics.newArrayList();
for (Tree tree : treebank) {
Trees.convertToCoreLabels(tree);
tree.percolateHeadAnnotations(binaryHeadFinder);
// Index from 1. Tools downstream expect index from 1, so for