I'm going to try wit P1344 and P1532 as a qualifier for all participants at 2016 Olympics, using the Kaggle database @Jane023 suggested. So we can start to work in this model. I will have some time to discuss if P1532 is the correct property or we should use another one.

The database has some serious issues with diacritics!

I have started with the 2016 Summer Olympics and the task is really difficult. I spent around 4 hours cleaning everything but OpenRefine only reconciliated 42 from 13646 lines. So... it's not feasible in this way.

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I am still working on this task, but I think I am choosing a very different path than @Theklan did. I am basically doing an import from Olympedia with a Python crawler script.

Since it relies on existing identifiers (P8286 for sportspersons and P9055 for events) in Wikidata, those needed to be added before I can actually import anything. The identifiers have been finished yesterday (it's more or less complete), so this couldn't really be done any earlier. I am now planning to do this in my spare time within the next days.