SELECT DISTINCT ?uri WHERE { <http://dbpedia.org/resource/The_Prodigal_Son_(play)> <http://dbpedia.org/property/subject> ?uri }
What is the subject of The Prodigal son ?
SELECT DISTINCT ?v WHERE { resource:The_Prodigal_Son_(play) property:subject ?v }
Jesus
The subject of The Prodigal Son is [Jesus].
The theme of the prodigal son is [Jesus].
The subject of The Prodigal Son (play)  is [Jesus].
The theme of the play, The Prodigal Son is [Jesus].