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The anaemia induced by 3 ' - azido - 3 ' dideoxythymidine ( AZT ) is poorly understood .
 Disease: anaemia; Chemical: 3 ' - azido - 3 ' dideoxythymidine; Chemical: AZT
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: anaemia; Chemical: 3 ' - azido - 3 ' dideoxythymidine; Chemical: AZT