14968
Poly ( ADP - ribose ) polymerase 1 ( PARP - 1 ) inhibitors are thought as breakthrough for cancer treatment in solid tumors such as breast cancer through their effects on PARP ' s enzymatic activity .
 Chemical: Poly ( ADP - ribose )
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Poly ( ADP - ribose ) 
Answer:
 Chemical: Poly ( ADP - ribose )