All Simpson's Blackboard gags - With Season Title

DISPLAY THE SEASON LABEL

• Looking at the dbpedia page The Simpsons episodes Season 12, we see it has a user-friendly label, The Simpson episodes, season 12.   

THE QUERY DIAGRAM

THE SPARQL QUERY - WITH THE SEASON TITLE

SELECT distinct ?season_title,?episode,?chalkboard_gag
WHERE 
{
 ?episode
   <http://www.w3.org/2004/02/skos/core#subject>
     ?season
 .
 ?episode
   <http://dbpedia.org/property/blackboard>
     ?chalkboard_gag
 .
   ?season
       <http://www.w3.org/2000/01/rdf-schema#label>
         ?season_title
     .
}

Show results

PICK UP THE SEASON TITLE

12)?season
13) <http://www.w3.org/2000/01/rdf-schema#label>
14) ?season_title
15).

Line 12) For each season
Line 13) return the it's user-friendly label
Line 14) and call it ?season_title.