13883
Treatment of [ H1 ] ( 0 ) with H ( + ) gives 0 . 5 equiv of H2 and [ H1 ] ( + ) .
 Chemical: H1; Chemical: H ( + ); Chemical: H2; Chemical: [ H1 ] ( + )
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: H1; Chemical: H ( + ); Chemical: H2; Chemical: [ H1 ] ( + )