Complex sentence: He retired from the post on 12 December 2012.Has been writing Urdu columns titled'Wada Khilafi' in the Urdu daily "Dunya News".
Split into simpler sentences: He retired from the post on 12 December 2012. Presently, he writes Urdu columns titled'Wada Khilafi' in the Urdu daily "Dunya News".