How can I fetch all the topics from dbpedia in format like JSON, Spreadsheet or any other so that I can process on them later. Can I do this from this SPARQL console from dbpedia:
http://dbpedia.org/sparql
I am not familiar with SPARQL
If you look at the information page, it has some links to sample queries. One of those, for example, is for The Beatles. At the foot of that example query output page are links to various JSON versions of the data:
RDF: http://dbpedia.org/data/The_Beatles.json