20868
The experimental results have demonstrated that the obtained 3D S - N - CF exhibited better catalytic activity , longer - term stability and higher methanol tolerance than a commercial Pt / C catalyst .
 Chemical: S; Chemical: N; Chemical: methanol; Chemical: Pt; Chemical: C
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: S; Chemical: N; Chemical: methanol; Chemical: Pt; Chemical: C