The discussion started simply enough: Who is the best skier on the mountain?

The discussions on constructing a second nuclear power plant started in the early 1970s.

Such a discussion could start after watching television news program in which suicide was mentioned.

I knew their conversation because the discussion had started on the bus back from the park.

And the discussion has started too about what to do to prevent such devastating events happening again.

I was back in my seat when the discussion started.

You did more than enough just getting these discussions started.

By the 17th century, this had become too small, and discussions started about building a new one in 1608.

The discussion is starting now and I will certainly look into those details in the future.

I must change this atmosphere before any serious discussion starts.