Translation of konvex

Yesterday, I heard a very good example to explain my point: On their journey more than ten years ago, the presidential couple Mr. and Mrs. Clinton visited Egypt. They were welcomed by the president.
I took my backpack and looked for a minibus that would take me a little outside of the town to a small settlement called El Panchan. I arrived there very early and no rooms were available yet.
You cannot be in this city without watching a football game. We therefore bought tickets two days ahead in order to see the soccer game between Bocca Juniors and Newell's Old Boys from Rosario.