Mystery Call

For this mystery call, we happened to end up in the Netherlands. We asked yes or no questions to figure out their location, and finally guessed it. One of our first questions, which was answered with a yes, was "Are you in Europe?" They didn't know who we were either, so they asked us questions as well. They correctly guessed that we were in the United States, as well that we were in Texas. However, we figured it out first, and they found it out shortly after.  So far, we have guessed that they are in a school west of Amsterdam, in a town called Kwintsheul. It is currently 9 am on March 13th where they live. We learned how to say hello in their language. It is hallo or hoi.