17010
In cases in which experimental data on chemical - specific input parameters are lacking , chemical regulations allow the use of alternatives to testing , such as in silico predictions based on quantitative structure - property relationships ( QSPRs ) .
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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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