Subobjects with internal links?

From semantic-mediawiki.org

I have problems to set subobjects when the value of a property contains e.g. a [[link]] to an other page. Is there a work around for this issue? The property has the type text.

10:36, 23 May 2017

Please use https://sandbox.semantic-mediawiki.org to demonstrate the issue.

19:09, 10 June 2017