2835
Magnetic resonance imaging of cerebral venous thrombosis secondary to " low - dose " birth control pills .
 Disease: venous thrombosis
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: venous thrombosis 
Answer:
 Disease: venous thrombosis