97612
Participation in this study became unrealistic , as patients did not want to participate in treatment of total darkness from 6 p.m. to 8 a.m. More recently , with the discovery of intrinsically photosensitive retinal ganglion cells , it has been hypothesized that similar results could be achieved by blocking blue light , as a potential treatment for bipolar disorder .
 disease: bipolar disorder
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: bipolar disorder 
Answer:
 disease: bipolar disorder