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.

Q: Context: No. 288 Squadron RAF was a Royal Air Force Squadron formed as an anti-aircraft co-operation unit in World War II. 
 Question: What was the military branch for No. 288 Squadron RAF?

A: royal air force
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Q: Context: Copper of Kargaly origin was distributed during Bronze Age over a vast territory within the steppe and forest-steppe of Eastern Europe. 
 Question: What is the product of Kargaly?

A: copper
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Q: Context: alpha-Synuclein and ubiquitin are two Lewy body protein components that may play antagonistic roles in the pathogenesis of Lewy bodies. We examined the relationship between alpha-synuclein, ubiquitin, and lipids in Lewy bodies of fixed brain sections or isolated from cortical tissues of dementia with Lewy bodies. Lewy bodies exhibited a range of labeling patterns for alpha-synuclein and ubiquitin, from a homogeneous pattern in which alpha-synuclein and ubiquitin were evenly distributed and overlapped across the inclusion body to a concentric pattern in which alpha-synuclein and ubiquitin were partially segregated, with alpha-synuclein labeling concentrated in the peripheral domain and ubiquitin in the central domain of the Lewy body. Lipids represented a significant component in both homogeneous and concentric Lewy bodies. These results suggest that Lewy bodies are heterogeneous in their subregional composition. The segregation of alpha-synuclein to Lewy body peripheral domain is consistent with the hypothesis that alpha-synuclein is continually deposited onto Lewy bodies. 
 Question: Which is the primary protein component of Lewy bodies?

A:
αsyn
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