What are "function terms" in the context of an ontology? I was going through the Wikipedia page on ontology components and noticed something that I had been hoping to find, for a long time. In the components' overview it mentioned: 


  Function terms: complex structures formed from certain relations that can be used in place of an individual term in a statement


I tried digging deeper into function terms but couldn't find any other references. Is this a standard component of an ontology? 

References would be nice. Ultimately, I'm looking for something like this in the DBPedia ontology. Would have been nice if I could add ontology and dbpedia as tags to the question, but I don't have the requisite reputation.
If you are looking for the functional verbs used in VA/VE (value analysis / value engineering) look at: 


https://www.valueanalysis.ca/functionanalysis.php
http://www.brcommunity.com/articles.php?id=b679
https://www.washoeschools.net/cms/lib08/NV01912265/Centricity/Domain/253/Social%20Studies/Marker%20Verbs.pdf