Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Input: Consider Input: Context: Telomeres may regulate human disease by at least two independent mechanisms. First, replicative senescence occurs once short telomeres generate DNA-damage signals that produce a barrier to tumor progression. Second, telomere position effects (TPE) could change gene expression at intermediate telomere lengths in cultured human cells. Here we report that telomere length may contribute to the pathogenesis of facioscapulohumeral muscular dystrophy (FSHD). FSHD is a late-onset disease genetically residing only 25-60 kilobases from the end of chromosome 4q. We used a floxable telomerase to generate isogenic clones with different telomere lengths from affected patients and their unaffected siblings. DUX4, the primary candidate for FSHD pathogenesis, is upregulated over ten-fold in FSHD myoblasts and myotubes with short telomeres, and its expression is inversely proportional to telomere length. FSHD may be the first known human disease in which TPE contributes to age-related phenotype. 
 Question: Which disease is associated with the ectopic expression of the protein encoded by the gene DUX4?

Output: fshd


Input: Consider Input: Context: Robert Edward Chambliss (January 14, 1904 -- October 29, 1985), also known as Dynamite Bob, was convicted in 1977 of murder for his role as conspirator in the 16th Street Baptist Church bombing in 1963. 
 Question: Which crime led to the conviction of Robert Edward Chambliss?

Output: murder


Input: Consider Input: Context: During the war, the Russian army organized the Crimean campaigns of 1687 and 1689 both which ended in Russian defeats. Despite these setbacks, Russia launched the Azov campaigns in 1695 and 1696, and after raising the siege in 1695 successfully occupied Azov in 1696. 
 Question: What happened first, the Azov campaigns or the Crimean campaigns?


Output: azov campaigns