Hello.
I think you should add the support for the PLURAL magic word by default in message "Smw subpropertyarticlecount" for extension Semantic MediaWiki.
The message says: "This property has the following $1 subproperties." ($1 is the subpropery count).
But if the property has only one subproperty, the message becomes: "This property has the following 1 subproperties." (see http://semanticweb.org/wiki/Property:Affiliation. For tech details about that site see http://semanticweb.org/wiki/Special:Version.)
It would be better if it looks "This property has the following subproperty." (singular).
So I propose to change the English message to: "This property has the following {{PLURAL:$1|subproperty|$1 subproperties}}."
Version: unspecified
Severity: enhancement