21039
The model quantitatively captures literature data from Yannopoulos and co - workers for the extent of polymerization versus temperature for bulk sulfur polymerization and for polymerization in 20 , 7 . 5 , and 2 . 5 nm diameter Gelsil nanopores , assuming that the change of entropy of nanoconfined chains scales with molecular size to the second power and with nanopore diameter to either the - 3 . 0 or - 3 . 8 power , the former of which fits slightly better .
 Chemical: sulfur; Chemical: Gelsil
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: sulfur; Chemical: Gelsil