8057
These insights should stimulate surface conductance studies at SG monolayers with sulfonic acid groups , and they bolster efforts in designing proton conducting polymers conducive to fuel cell operation above ~ 100 degrees C .
 Chemical: sulfonic acid
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: sulfonic acid