7433
Drug repositioning , an innovative therapeutic application of an old drug , has received much attention as a particularly costeffective strategy in drug R & D Recent work has indicated that repositioning can be promoted by utilizing a wide range of information sources , including medicinal chemical , target , mechanism , main and side - effect - related information , and also bibliometric and taxonomical fingerprints , signatures and knowledge bases .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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