Good, good question. Doff had a zoo destroyed and never rebuild after the war. So my first visit to the zoo was to book. And I was much impressed by ELAs, by polar bears, by great apes, and so on. From the beginning on I was enthusiastic about zoo animals. My second visit to a zoo was in fact to cologne from Disseldorf in the year 1956. At that time, a new polar bear exhibit was just finished, opened and everybody liked it and they came and look to look it. And there were successful breeding program. I think some 16 polar bears have been born there and brought up.