1991
This observed genomic instability will be of value in predicting the potential metastatic behavior of these aggressive pituitary tumors .
 Anatomy: pituitary tumors
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: pituitary tumors 
Answer:
 Anatomy: pituitary tumors