Input: Article: Beginning in 1689, the colonies became involved in a series of wars between Great Britain and France for control of North America, the most important of which were Queen Anne's War, in which the British conquered French colony Acadia, and the final French and Indian War (175463) when Britain was victorious over all the French colonies in North America. This final war was to give thousands of colonists, including Virginia colonel George Washington, military experience which they put to use during the American Revolutionary War.

Now answer this question: When was the final French and Indian War fought?

Output: 175463

Input: Article: Short-distance passerine migrants have two evolutionary origins. Those that have long-distance migrants in the same family, such as the common chiffchaff Phylloscopus collybita, are species of southern hemisphere origins that have progressively shortened their return migration to stay in the northern hemisphere.

Now answer this question: Why have some specied progressively shortened their return migration?

Output: to stay in the northern hemisphere

Input: Article: In practice, because of sovereignty, any state can withdraw from any treaty at any time. The question of whether this is permitted is really a question of how other states will react to the withdrawal; for instance, another state might impose sanctions or go to war over a treaty violation.

Now answer this question: Although withdrawal from a treaty may not be possible in theory, when might it be possible anyway?

Output:
In practice