Which Sherlock Holmes story with a color in its title was made into a British silent feature film in 1914?

The 1913 Treaty of Bucharest ended the second of which peninsular wars? Which war lasted from 1914 to 1918? In 1914, which empire closed the Dardanelles to Allied shipping? Which name did the pope elected in 1914 choose, reigning as the XVth? "The Metamorphosis," published in 1915, is one of the best-known works by which Prague-born author? In 1916, General John J. Pershing led a U.S. expedition into Mexico in pursuit of which rebel, who was assassinated in… The 1916 Battle of Verdun was part of which war? Ireland's 1916 Easter Rising against British rule was centered in which city?