Generate a correct and concise answer for the question based on the words in the context.

Context : Valentina Ivashova was married to Soviet film director Nikolai Ekk. 
Question : What is Valentina Ivashova's spouse's name?
Nikolai Ekk

Context : Bobby Frank Cherry (June 20, 1930 -- November 18, 2004) was an American white supremacist and Klansman who was convicted of murder in 2002 for his role in the 16th Street Baptist Church bombing in 1963. 
Question : Which crime led to the conviction of Bobby Frank Cherry?
murder

Context : John David Duty (April 25, 1952 -- December 16, 2010) was an American who was executed in Oklahoma for first-degree murder. 
Question : For what crime was John David Duty prosecuted?

murder