Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

[EX Q]: Context: During the war, the Russian army organized the Crimean campaigns of 1687 and 1689 both which ended in Russian defeats. Despite these setbacks, Russia launched the Azov campaigns in 1695 and 1696, and after raising the siege in 1695 successfully occupied Azov in 1696. 
 Question: who lost the Crimean Campaigns?
[EX A]: russia

[EX Q]: Context: For travellers who want to experience some of the history and mystery of the ancient world, here is a list of cool destinations for your next holiday. Angkor Wat, Cambodia Built in the 12th century, Angkor Wat (meaning "capital monastery") was a temple in the ancient Khmer capital city of Angkor. It is Cambodia's best-known tourist attraction and is famed for its beautiful architecture and reliefs. You'll need at least three days to fully discover the delights of this magnificent site. Machu Picchu, Peru Machu Picchu was built high in the Andes Mountains of South America by the Inca in the 15th century. Although well preserved its exact purpose is unknown. It is famous throughout the world not only for its incredible design but also for the natural beauty that surrounds it. Give yourself a week to explore this magnificent site. Stonehenge, England The entire Stonehenge site was constructed over thousands of years. But why and how it was built remains a mystery. As the weather can be pretty bleak in winter and the crowds huge in summer, we suggest autumn should be the best time to visit these monster rocks. Pompeii, Italy When Mount Vesuvius erupted in 79 A.D., Pompeii was buried under many layers of ash, preserving the city exactly as it was when the volcano erupted. Because so many objects were preserved, scientists and visitors are able to better understand daily life in the ancient Roman Empire. 
 Question: Which location offers the most direct view into daily life in the ancient world?
[EX A]: pompeii.

[EX Q]: Context: Parkinson's disease (PD) is characterized as a neurodegenerative movement disorder presenting with rigidity, resting tremor, disturbances in balance and slowness in movement. An important pathologic feature of PD is the presence of Lewy bodies. The primary structural component of Lewy bodies are fibrils composed primarily of alpha-synuclein, a highly conserved 140 amino acid protein that is predominantly expressed in neurons and which may play a role in synaptic plasticity and neurotransmission. Numerous studies suggest the aggregation and modification of alpha-synuclein as a key step leading to Lewy body formation and neuronal cell loss associated with PD. Because of the central role of alpha-synuclein in PD, it represents a novel drug target for the possible treatment of this disease. In this review, an overview of the role of alpha-synuclein in PD will be discussed with an emphasis on recent studies utilizing an immunization approach against alpha-synuclein as a possible treatment option for this debilitating disease. 
 Question: Which is the primary protein component of Lewy bodies?
[EX A]:
αsyn