21355
Pulse - field gradient NMR elucidated that the fast H ( + ) conductivity was achieved by the support of Li ( + ) ion movements in the channel .
 Chemical: H ( + ); Chemical: Li ( + )
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: H ( + ), Li ( + ) 
Answer:
 Chemical: H ( + ); Chemical: Li ( + )