Schema.org is licensed Attribution-ShareAlike 3.0 Unported.

 Hi friends,

A question:
I'd like to use schema.org ontologies, and I see it is licensed
Attribution-ShareAlike 3.0 Unported.

How I see it:If I change even one predicate, that will be a remix, and I
have to share back my ontology, do I have that right?On the other hand, my
data does not need to be shared under the ShareAlike.

Do you agree?

I was surprised by the ShareAlike and want to make sure I get it right.

Thanks in advance,

Lionel Wolberger