3339
The most frequently observed side effect was fecal occult blood ( 25 % of patients ) ; however , there was no other evidence of gastrointestinal ( GI ) bleeding in these patients .
 Disease: fecal occult blood; Disease: gastrointestinal ( GI ) 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: fecal occult blood, gastrointestinal ( GI ) bleeding 
Answer:
 Disease: fecal occult blood; Disease: gastrointestinal ( GI ) bleeding