3727
An acquired deletion of the long arm of chromosome 20 is a recurrent abnormality in myeloproliferative disorders , particularly polycythemia vera and myelodysplastic syndromes .
 DNA: long arm; DNA: chromosome 20
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: long arm, chromosome 20 
Answer:
 DNA: long arm; DNA: chromosome 20