Question: How many people was this American contract killer and serial killer, who was the subject of the movie The Iceman, convicted of killing?
Sentence (from "The Iceman (film)"): Released in 2012 at the Venice Film Festival, the film was directed by Ariel Vromen, and stars Michael Shannon as Kuklinski, Winona Ryder, Chris Evans, and Ray Liotta.
Relevant evidence: No