This task involves creating questions from a given passage that involve some kind of complex reasoning (including numerical reasoning).
The generated questions must require looking at more than one part of the passage to answer. Try to use a variety of reasoning types in your questions (some of the sample reasoning types are illustrated in the 'positive examples' field) and also have a variety of answer types (spans, numbers, dates). A span is a continuous phrase taken directly from the passage or question. In such questions, the answer spans are recommended to be five words. Questions with answer type "number", are expected to start with "How many". For instance, "How long did an event last?" can be phrased as "How many years did an event last?". To increase diversity, try to create more questions for which the answer will be multiple spans. Please create questions that require AT LEAST 2 arithmetic operations as illustrated in the 'positive examples' field. You are encouraged to try DIFFERENT COMBINATIONS of operations and not just limit to the combinations shown in those examples. The more challenging questions you create, the better it is.
Q: Passage: At the same time the Baku Commune was involved in heavy fighting with the advancing Caucasian Ottoman Army in and around Ganja. The Ottoman Empire's Enver Pasha began to move forward with the newly established Army of Islam. Major battles occurred in Yevlakh and Agdash. Dunsterville ordered the evacuation of the city on September 14, after six weeks of occupation, and withdrew to Iran; most of the Armenian population escaped with British forces. The Ottoman Army of Islam and its Azeri allies, led by Nuri Pasha, entered Baku on September 15 and slaughtered between 10,000-20,000 Armenians in retaliation for the March massacre of Muslims. The capital of the Azerbaijan was finally moved from Ganja to Baku. However, after the Armistice of Mudros between the United Kingdom and the Ottoman Empire on October 30, Turkish troops were substituted by the Triple Entente. Headed by British Gen. W. Thomson, who had declared himself the military governor of Baku, 1,000 Commonwealth soldiers arrived in Baku on November 17, 1918. By Gen. Thomson's order, martial law was implemented in Baku.
A:
How many days after Dunsterville ordered the evacuation of the city did the Ottoman Army of Islam and its Azeri allies enter Baku?