2122
For a person of either sex with HL - A W27 , there appears to be about a 20 per cent chance that ankylosing spondylitis will develop , suggesting a prevalence of 10 to 15 per thousand .
 Disease: ankylosing spondylitis
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
 Entities: ankylosing spondylitis 
Answer:
 Disease: ankylosing spondylitis