Combine the following sentences into a coherent and concise text: The Penn Chinese Treebank (CTB) is an ongoing project, with its objective being to create a segmented Chinese corpus annotated with POS tags and syntactic brackets.
In this paper, we will address three issues in the development of the Chinese Treebank: annotation speed, annotation accuracy and usability of the corpus.
One might also want to extract information from sentences with pronouns.
Among other things, there are at least two areas in which the Chinese treebank can be enhanced, that is, more finegrained predicate-argument structure annotation and coreference annotation.
However, the subject and object in the Chinese Treebank are defined primarily in structural terms.