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Subsequently , zinc oxide and alumina ALD precursors are shown to preferentially react with the functional moieties of PCDA , resulting in templated oxide nanostructures .
 Chemical: zinc oxide; Chemical: alumina; Chemical: PCDA; Chemical: oxide
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: zinc oxide; Chemical: alumina; Chemical: PCDA; Chemical: oxide