The paper for this make it look pretty good compared to that. I'll be trying it.
[1] https://github.com/allenai/openie-standalone
I would be really interested on how ClausIE stacks up to that.
ClausIE also seems to be using CoreNLP _and_ OpenNLP.
http://nlp.stanford.edu:8080/parser/index.jsp
The paper for this make it look pretty good compared to that. I'll be trying it.
[1] https://github.com/allenai/openie-standalone