Question: Who originally wrote the manga which was later illustrated by Tamon Ohta?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/illustrator> <http://dbpedia.org/resource/Tamon_Ohta> . ?x <http://dbpedia.org/property/author> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Manga>}