Is there a way to filter for only questions labeled as duplicate which are linked to an answer?

For example:

- http://askubuntu.com/questions/156227/duplicate-sources-list-entry-but-cannot-find-the-duplicates 

Being linked to: 

- http://askubuntu.com/questions/120621/how-to-fix-duplicate-sources-list-entry

Is there a way to see every question link the best answer? This might be useful when trying to cull the excess duplicate posts, by allowing people to flag for removal. Or other similar purposes.