Why on earth is this a question for translating? Waste of a chance to learn as names don't generally translate.
This 'sentence' was deleted some weeks ago and has been replaced with more meaningful ones.
Sorry, but this question is still active as I had this tonight. If it has been deleted then it hasn't roled out on the Android app
Thanks for posting, this is still an ongoing problem with all Duolingo courses, especially the ones still being edited.
A workaround is to the strengthen rather than repeating the exercise when redoing the unit.