2805
Although preclinical and clinical findings suggest pulsatile stimulation of striatal postsynaptic receptors as a key mechanism underlying levodopa - induced dyskinesias , their pathogenesis is still unclear .
 Chemical: levodopa; Disease: dyskinesias
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: levodopa, dyskinesias 
Answer:
 Chemical: levodopa; Disease: dyskinesias