2970
The Ro15 - 1788 group showed a significant improvement in the performance test up to 120 min after administration of the drug .
 Chemical: Ro15 - 1788
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: Ro15 - 1788