Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.
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Question: NeXTSTEP (also stylized as NeXTstep, NeXTStep, and NEXTSTEP) is a combination of several parts: a Unix operating system based on the Mach kernel, plus source code from BSD Display PostScript and a proprietary windowing engine the Objective-C language and runtime an object-oriented (OO) application layer, including several ''kits'' development tools for the OO layers NeXTSTEP is notable for having been a preeminent implementation of the latter three items.

Answer: What is the programming language for NeXTSTEP?

Question: This tryptch is missing a panel, lost when it was disassembled in 1777, but the panel with St. Anthony Beaten by Devils is currently on display at the Pinacoteca Nazionale.

Answer: What is the name of the place where St. Anthony Beaten by Devils can be found?

Question: The military aspect of the war began with the Armistice of Mudros. The military operations of the Greco-Turkish war can be roughly divided into three main phases: the first phase, spanning the period from May 1919 to October 1920, encompassed the Greek Landings in Asia Minor and their consolidation along the Aegean Coast. The second phase lasted from October 1920 to August 1921, and was characterised by Greek offensive operations. The third and final phase lasted until August 1922, when the strategic initiative was held by the Turkish Army.

Answer:
What was the shortest phase of the war?