Detailed Instructions: 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: The primary cause for the rebellion was the policies passed by the occupiers. Constant denationalization, including closing Serbian schools, prohibition of the Serbian language and traditions, and burning of books, and looting, requisition, internment, provoked the population. Romania entering the war in August 1916 awakened hope in the Serbian population of a breakthrough of the Salonika Front, some arming themselves and taking to the forests. Kosta Vojinovic began the organization of resistance, and in the summer of 1916 established a band in Leposavic, the core of the future Ibar-Kopaonik Detachment. At the end of September 1916, the Serbian High Command sent Kosta Pecanac, reserve infantry lieutenant and veteran Chetnik vojvoda, by airplane into Toplica. He was given the task to establish a secret resistance organization to be activated when the Allies and the Serbian Army break the Salonika Front and arrive at Skoplje. The peak of Serbian discontent came with the Bulgarian announcement of conscription of local Serbs aged 18-50 for military service. Massive flights to the mountains from Bulgarian recruit commissions began. The first armed conflicts began on 20 February between fleeing conscripts and Bulgarian chases. Pecanac and Vojinovic established headquarters on Mount Kopaonik. The decision for this rebellion was taken and on February 21, near the Toplica river the rebellion broke out.
A:
How many months after Romania entered the war did the first armed conflicts begin?