6601
The monoammoniate of magnesium borohydride ( Mg ( BH ( 4 ) ) ( 2 ) . NH ( 3 ) ) was obtained for the first time .
 Chemical: magnesium borohydride; Chemical: Mg ( BH ( 4 ) ) ( 2 ) . NH ( 3 )
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: magnesium borohydride, Mg ( BH ( 4 ) ) ( 2 ) . NH ( 3 ) 
Answer:
 Chemical: magnesium borohydride; Chemical: Mg ( BH ( 4 ) ) ( 2 ) . NH ( 3 )