[WIP] complex_webqa - Error zipfile.BadZipFile: Bad CRC-32
Have a string `zipfile.BadZipFile: Bad CRC-32 for file 'web_snippets_train.json'` error when downloading the largest file from dropbox: `https://www.dropbox.com/sh/7pkwkrfnwqhsnpo/AABVENv_Q9rFtnM61liyzO0La/web_snippets_train.json.zip?dl=1`

Didn't managed to see how to solve that.

Putting aside for now.
