[OSM-talk] Question about contributor terms and derived contributions

[Nathan Edgars II]

I've read the current version of the contributor terms and have a question:
"If you contribute Contents, You are indicating that, as far as You 
know, You have the right to authorize OSMF to use and distribute those 
Contents under our current licence terms."

As far as I know, I have probably contributed data in the following 
circumstances:
*Mapper A who has not accepted the change to ODbL drew two intersecting 
roads.
*I note in person that there is a recently-added island-separated 
right-turn lane, and I add it (way B) based on the ways added by A and a 
rough estimate of its size.
Now I am the only contributor in the history of way B and all of its 
nodes. Yet their locations are based on cc-by-sa data, and cannot be 
distributed under ODbL.

What's the deal here? Am I misinterpreting the terms? Why am I 
capitalized? :)