2609
As for the ability of the divalent cations ( 1 - 17 . 5mM ) to induce the precipitation process in H ( 2 ) O , the sequence Ba ( 2 + ) >= Ca ( 2 + ) > Mg ( 2 + ) > Sr ( 2 + ) was found .
 Chemical: H ( 2 ) O; Chemical: Ba ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Mg ( 2 + ); Chemical: Sr ( 2 + )
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: H ( 2 ) O; Chemical: Ba ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Mg ( 2 + ); Chemical: Sr ( 2 + )