Translation of whose in German

This Thursday afternoon a group of twenty five belonging to the Language Institute of English will take a trip to the Canadian city Montreal, accompanied and well protected by the bodyguard Linda.
Usually in a place with a homegenous society hatred towards foreigners can grow much more easy as a small disturbance to the homogenity may upset the entire society. People are not used to changes.
I had imagined my first dinner to be a little different, but I was already here and wanted to make the best out of it. So i ate there and return to my hostel at around ten o'clock at night.