Question: What is the release year of this American film adaptation of the novel of the same name, published in 1984, in which Leon Lissek had a role?
Sentence (from "The Unbearable Lightness of Being (film)"): Director Philip Kaufman and screenwriter Jean-Claude Carrière portray the effect on Czechoslovak artistic and intellectual life during the 1968 Prague Spring of socialist liberalization preceding the invasion by the Soviet-led Warsaw Pact that ushered in a period of communist repression.
Relevant evidence: No