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

{{.form/skos:hasTopConcept
|hostForm=full pagename of host form
|skosName =eg hasTopConcept
|propName =eg skos:hasTopConcept 
|propLabel=eg has has Top Concept
|placeholder=
|textintro=
|textoutro=
}}

Edit the page to see the template text.