Bison from Buffalo, which bison from Buffalo bully, themselves bully bison from Buffalo.
Bison NNP ROOT +-- from IN prep | +-- Buffalo NNP pobj +-- , , punct +-- bison NN ccomp | +-- themselves PRP nsubj | +-- bully RB advmod | +-- from IN prep | +-- Buffalo NNP pobj +-- . . punct
"bully RB advmod"
I assume this is wrong, and probably triggered by the "ly" ending? Also, odd that it dropped the second clause and didn't see any trouble with the parsed results lacking a single verb. I guess it has to be able to handle fragments, etc.