Task: Question Generation
Input (English): Context : Being one of the key figures of the North Vietnam armed forces in Vietnam War, Lê Trọng Tấn was Deputy Commander of the Viet Cong and second commander of the 1975 Spring Offensive that effectively ended the war. 
Subject : Lê Trọng Tấn 
Relation : conflict
Output (English): What was the war that Lê Trọng Tấn fought in?