In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

[EX Q]: Why did Grand Duchy of Lithuania become a famous place for noble Ruthenian families to get intermarried?, Context: In Ruthenia the nobility gradually gravitated its loyalty towards the multicultural and multilingual Grand Duchy of Lithuania after the principalities of Halych and Volhynia became a part of it. Many noble Ruthenian families intermarried with Lithuanian ones.
[EX A]: after the principalities of Halych and Volhynia became a part of it

[EX Q]: What happened later, Edward Whymper reaching the top of the Matterhorn or the first ascent of the Eiger Nordwand?, Context: The first British Mont Blanc ascent was in 1788; the first female ascent in 1819. By the mid-1850s Swiss mountaineers had ascended most of the peaks and were eagerly sought as mountain guides. Edward Whymper reached the top of the Matterhorn in 1865 (after seven attempts), and in 1938 the last of the six great north faces of the Alps was climbed with the first ascent of the Eiger Nordwand (north face of the Eiger).
[EX A]: first ascent of the Eiger Nordwand

[EX Q]: Which of the following is not a body of water: the Rio de la Plata, the Americas or the Atlantic Ocean?, Context: The Rambla is an avenue that goes along the entire coastline of Montevideo. The literal meaning of the Spanish word rambla is "avenue" or "watercourse", but in the Americas it is mostly used as "coastal avenue", and since all the southern departments of Uruguay border either the Río de la Plata or the Atlantic Ocean, they all have ramblas as well. As an integral part of Montevidean identity, the Rambla has been included by Uruguay in the Indicative List of World Heritage sites, though it has not received this status. Previously, the entire Rambla was called Rambla Naciones Unidas ("United Nations"), but in recent times different names have been given to specific parts of it.
[EX A]:
Americas