You will be given a definition of a task first, then some input of the task.
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.

Passage: In August, Ottoman forces established a provisional government of Western Thrace at Komotini to pressure Bulgaria to make peace. Bulgaria sent a three-man delegationGeneral Mihail Savov and the diplomats Andrei Toshev and Grigor Nachovichto Constantinople to negotiate a peace on 6 September. The Ottoman delegation was led by Foreign Minister Mehmed Talat Bey, assisted by Naval Minister Curuksulu Mahmud Pasha and Halil Bey. Although Russia tried to intervene throughout August to prevent Edirne from becoming Turkish again, Toshev told the Ottomans at Constantinople that "he Russians consider Constantinople their natural inheritance. Their main concern is that when Constantinople falls into their hands it shall have the largest possible hinterland. If Adrianople is in the possession of the Turks, they shall get it too." Resigned to losing Edirne, the Bulgarians played for Krk Kilise . Both sides made competing declarations: Savov that "Bulgaria, who defeated the Turks on all fronts, cannot end this glorious campaign with the signing of an agreement which retains none of the battlefields on which so much Bulgarian blood has been shed," and Mahmud Pasha that "hat we have taken is ours." In the end, none of the battlefields were retained in the Treaty of Constantinople of 30 September. Bulgarian forces finally returned south of the Rhodopes in October. The Radoslavov government continued to negotiate with the Ottomans in the hopes of forming an alliance. These talks finally bore fruit in the Secret Bulgarian-Ottoman Treaty of August 1914. On 14 November 1913 Greece and the Ottomans signed a treaty in Athens bringing to a formal end the hostilities between them. On 14 March 1914, Serbia signed a treaty in Constantinople, restoring relations with the Ottoman Empire and reaffirming the 1913 Treaty of London. No treaty between Montenegro and the Ottoman Empire was ever signed.
Output:
How many days after Bulgaria's three-man delegation was sent to Constantinople did they create the Treaty of Constantinople.?