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Drug studies using the indirect antiglobulin test were strongly positive with trimethoprim and trimethoprim - sulfamethoxazole but negative with sulfamethoxazole .
 Chemical: trimethoprim; Chemical: trimethoprim - sulfamethoxazole; Chemical: sulfamethoxazole
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:
 Chemical: trimethoprim; Chemical: trimethoprim - sulfamethoxazole; Chemical: sulfamethoxazole