On the relationship of GO:Behavior with NBO:behavior process

[matentzn]

So far I went under the assumption that NBO sort of extends the GO behavior branch. For our work in the phenotype ontology world we make extensive use of both, and I need to understand what our framework for reconciling the separately evolving GO:behavior and NBO:behavior process branches will look like.

Is this assumption correct? NBO:behavior process is a subclass of GO:"behavior"

Now, more generally, which of the following is true:

1. There are NBO terms that are conceptually subclasses of GO terms
2. There are GO terms that are conceptually subclasses of NBO terms
3. All of the above.
4. None of the above.

@cmungall @dosumis @balhoff @pmidford @PaulNSchofield @leechuck

Thanks all!