19921
Rational design , synthesis and QSAR study of vasorelaxant active 3 - pyridinecarbonitriles incorporating 1H - benzimidazol - 2 - yl function .
 Chemical: 3 - pyridinecarbonitriles; Chemical: 1H - benzimidazol - 2 - yl
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: 3 - pyridinecarbonitriles; Chemical: 1H - benzimidazol - 2 - yl