6244
Interactions between apo - CaM and the Kv7 . 4 tail involve two C - terminal tail segments , known as the A and B segments , whereas the interaction between Ca ( 2 + ) / CaM and the Kv7 . 4 C - terminal tail requires only the B segment .
 Chemical: C; Chemical: Ca ( 2 + ); Chemical: C
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: C, Ca ( 2 + ), C 
Answer:
 Chemical: C; Chemical: Ca ( 2 + ); Chemical: C