23844
The preliminary results obtained highlighted the occurrence of a pronounced synergistic relationship between piperacillin / cinnamon bark oil , piperacillin / lavender oil , piperacillin / peppermint oil as well as meropenem / peppermint oil against two of the three bacteria under study with a FIC index in the range 0 . 26 - 0 . 5 .
 Chemical: piperacillin; Chemical: piperacillin; Chemical: piperacillin; Chemical: meropenem
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: piperacillin; Chemical: piperacillin; Chemical: piperacillin; Chemical: meropenem