Definition: 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.
Input: Passage: The Iroquois attacked the Neutral Nation in 1650. By the end of 1651, they had completely driven the tribe from traditional territory, killing or assimilating thousands. At the time, the Neutrals inhabited a territory ranging from the present-day Niagara Peninsula, westward to the Grand River valley. In 1654 the Iroquois attacked the Erie, but with less success. The war between the Erie and the Iroquois lasted for two years. By 1656 the Iroquois had almost completely destroyed the Erie confederacy, whose members refused to flee to the west. The Erie territory was located on the southeastern shore of Lake Erie and was estimated to have 12,000 members in 1650. Greatly outnumbered by the tribes they had subdued, the Iroquois had been able to achieve their victories through the use of firearms purchased from the Dutch.
Output:
How many years after the Iroquois attack the Neutral Nation did they attack Erie?