Question: Pulan Visaranai is a 1990 Tamil language film directed by R. K. Selvamani, the  character of the antagonist Dharma (played by Anandaraj) is loosely based on which serial killer, what's the nickname of Indian serial killer Gowri Shankar?
Sentence (from "Pulan Visaranai 2"): Pulan Visaranai 2 is a 2015 Tamil language film directed by R. K. Selvamani and produced by Ibrahim Rowther.
Relevant evidence: No