Translation of Wasserzeichen

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.
In addition, after the tests I would like to give also a presentation to some of the teachers, as usually the different ideas come with the presentation. After speaking with them, some ideas emerge...
I got a nickname. Please answer the questions from my previous email (below), except number 4, which is answered on the Vocabulix's faq page. I am ready to start tomorrow, but i need the info first.