Right now, I need to write the query with the defined prefixes at the beginning, like:

prefix p: <https://mparaz.com/wiki/Property:P>
PREFIX ps: <http://mparaz.com/prop/>
prefix q: <https://mparaz.com/wiki/Item:Q>
prefix pp: <http://mparaz.com/prop/P>
PREFIX pr: <http://mparaz.com/prop/reference/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prov: <http://www.w3.org/ns/prov#>
PREFIX pq: <http://mparaz.com/prop/qualifier/>