12793
Unprecedented transformation of tetrathienoanthracene into pentacene on Ni ( 111 ) .
 Chemical: tetrathienoanthracene; Chemical: pentacene; Chemical: Ni ( 111 )
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: tetrathienoanthracene; Chemical: pentacene; Chemical: Ni ( 111 )