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Intending to prove how the architecture in Venice exemplified the principles he discussed in his earlier work , The Seven Lamps of Architecture , Ruskin examined the city in detail , describing for example over eighty churches .
 Venice, Ruskin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Venice, Ruskin