Thread:Help talk:Special property Subproperty of/Relations and Transitivity


 * If property P is a subproperty of property P', then all pairs of resources which are related by P are also related by P'.

Since querying for P' doesn't actually show the relationships stated by P, is it really accurate to say that this property agrees with the statement?

Following the example, if I have "husband" and "wife" as subproperties of "spouse", and I give the page "Ann" a "husband" relation to the page "Frank", there doesn't actually seem to be a "spouse" relationship created. If I ask who Ann's husband is, "Frank" is returned. But if I ask the name of her spouse, nothing is returned. More bizarrely, if I ask for articles with the spouse property set, and ask them what their spouse properties are set to... I get nothing!

Perhaps I'm misunderstanding this, but it seems like a tremendous asymmetry in functionality. This could be very useful, but it seems crippled.