3504
Clinically reversible veno - occlusive disease of the liver developed in a 23 - year - old man with acute lymphocytic leukemia after 10 months of maintenance therapy with 6 - thioguanine .
 Disease: veno - occlusive disease of the liver; Disease: acute lymphocytic leukemia; Chemical: 6 - thioguanine
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:
 Disease: veno - occlusive disease of the liver; Disease: acute lymphocytic leukemia; Chemical: 6 - thioguanine