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In addition , GaAs was found to grow perfectly as a shell layer on In ( 0 . 2 ) Ga ( 0 . 8 ) As with an extraordinary thickness , which is 15 times greater than the theoretical thin - film critical thickness for a 1 . 5 % lattice mismatch .
 Chemical: GaAs; Chemical: In ( 0 . 2 ) Ga ( 0 . 8 ) As
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: GaAs; Chemical: In ( 0 . 2 ) Ga ( 0 . 8 ) As