1498
A warfarin - drug interaction could have contributed to the haemorrhage in 24 ( 41 % ) of the warfarin patients and in 7 of these ( 12 % ) the bleeding complication was considered being possible to avoid .
 Chemical: warfarin; Disease: haemorrhage; Chemical: warfarin; Disease: bleeding
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: warfarin, haemorrhage, warfarin, bleeding 
Answer:
 Chemical: warfarin; Disease: haemorrhage; Chemical: warfarin; Disease: bleeding