10405
Drugs under investigation can be broadly subdivided into four groups : ( 1 ) Agents that create DNA damage ( i . e . cisplatin , cyclophosphamide ) ; ( 2 ) Agents that inhibit poly ( ADP - ribose ) polymerase ( PARP ) ; ( 3 ) Tyrosin - kinase inhibitors and monoclonal antibodies ; ( 4 ) Agents that inhibit downstream signals .
 Chemical: cisplatin; Chemical: cyclophosphamide; Chemical: poly ( ADP - ribose ); Chemical: Tyrosin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: cisplatin; Chemical: cyclophosphamide; Chemical: poly ( ADP - ribose ); Chemical: Tyrosin