Sentence examples for not sure and from inspiring English sources

I am really not sure, and this troubles me.

We're not sure, and unfortunately, neither are they.

I'm not sure (and I'm thinking about it, hard).

I'm really not sure, and that troubles me".

I'm still not sure, and it hardly matters.

I'm not sure, and of course it's extremely hard to pull off.

(I think. Not sure, and, under the terms of the experiment, I couldn't Google it).

In the end Jones is not sure and neither are we.

Other papers think he'll resurrect his career at... they're not sure and frankly don't care.

Hines was not sure, and the timekeepers had not bothered to count laps.

WJC: I'm not sure, and let me tell you why I'm not sure.