114552
" R7 " is a small-molecule flavonoid and orally active , potent , and selective agonist of the tropomyosin receptor kinase B ( TrkB ) – the main signaling receptor for the neurotrophin brain-derived neurotrophic factor ( BDNF ) – which is under development for the treatment of Alzheimer 's disease .
 disease: Alzheimer 's disease
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: Alzheimer 's disease 
Answer:
 disease: Alzheimer 's disease