This is the ".form/skos:semanticRelation" template. It should be called in the following format:

{{.form/skos:semanticRelation
|hostForm=full pagename of host form
|skosName =eg semanticRelation
|propName =eg skos:semanticRelation
|propLabel=eg has semantic relation
|placeholder=
|text=
}}

Edit the page to see the template text.