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The rhombohedral phase Ge ( 3 ) Sb ( 8 ) Te ( 6 ) and Ge ( 2 ) Sb ( 7 ) Te ( 4 ) NWs adopted an innovative structure ; 3Sb ( 2 ) layers intercalated the Ge ( 3 ) Sb ( 2 ) Te ( 6 ) and Ge ( 2 ) Sb ( 1 ) Te ( 4 ) domains , respectively , producing 3 . 4 and 2 . 7 nm period slabs .
 Chemical: Ge ( 3 ) Sb ( 8 ) Te ( 6 ); Chemical: Ge ( 2 ) Sb ( 7 ) Te ( 4 ); Chemical: 3Sb ( 2 ); Chemical: Ge ( 3 ) Sb ( 2 ) Te ( 6 ); Chemical: Ge ( 2 ) Sb ( 1 ) Te ( 4 )
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Ge ( 3 ) Sb ( 8 ) Te ( 6 ); Chemical: Ge ( 2 ) Sb ( 7 ) Te ( 4 ); Chemical: 3Sb ( 2 ); Chemical: Ge ( 3 ) Sb ( 2 ) Te ( 6 ); Chemical: Ge ( 2 ) Sb ( 1 ) Te ( 4 )