Some older datasets:

And here are some results from experiments.

The work described in the publications above was supported in part by the National Science Foundation under several grants (to see which grants supported a particular dataset, please consult the acknowledgments of the associated publication). Any opinions, findings, and conclusions or recommendations expressed above are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
Lillian Lee's home page.
Cornell NLP homepage