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Image sets are compactly represented with multiple Grass-mannian manifolds which are subsequently embedded in Euclidean space with the proposed spectral clustering algorithm .
 Grass-mannian manifolds, Image sets; spectral clustering algorithm, Euclidean space
Please list all entity pairs containing a certain relationship in the given options.Output format is "word1, word2; word3, word4". 
Option: conjunction, feature of, hyponym of, used for, part of, compare, evaluate for 
Text: {0} 
Answer:
 Grass-mannian manifolds, Image sets; spectral clustering algorithm, Euclidean space