https://en.wiktionary.org/wiki/advertisement
Steps to reproduce:
1. Click on the one of the audio widget's "MENU" buttons.
2. The credits section of the menu loads forever
Blocked URL:
https://commons.wikimedia.org/w/api.php?callback=jQuery32107904977293042967_1526400041001&action=parse&page=File%3AEn-advertisement.oga&smaxage=3600&maxage=3600&format=json&_=1526400041003
Filter causing blocking:
-advertisement.