We have received correspondence from Hughie, we've responded to that answering his questions and haven't heard from him since then.

We never heard from them. They never responded to the letter.

As of this date, we haven't received any correspondence asking for our help.

We demographers are hardly a wild and crazy lot. Most of what we'll be doing is answering questions about what this means.

There is no timescale by which charges can be expected in connection with these investigations. These are complicated investigations, and it will often be the case that when it seems to be reaching a close, something will happen that throws any timetable out of the window.

I'm not answering any questions about Pittsburgh. I have a job here in Oakland.