Какие открытия принадлежат Ньютону?

It is the second largest French-speaking city in the world after Paris, isn`t it?

Is it the second largest French-speaking city in the world after Paris?

Is it the second largest French-speaking city in the world after Paris or Nice?

What is the second largest French-speaking city in the world after Paris or Nice?

After which city is it the second largest French-speaking city in the world?