Translation:Do you know that Sofia's father is an important man?
Check on wikipedia for the names of the children of Esperanto's founder ...
I just read the Wikipedia articles about Zamenhof's kids Lidia and Adam and now I'm sad, because of the way that they died.(the Holocaust)
This discussion is kinda sad. I hope I don't offend anyone with what I thought when I was translating this sentence to english.
The answer to "why" questions like this are always either:
- It's wrong.
- Your answers are being checked by a computer, alternatives need to be manually entered, and nobody has entered it, most likely because nobody has reported it.
If this sort of thing happens where you're reasonably sure you're right, just report the alternative using the "report a problem" button.