17457
Here , we report that Arabidopsis thaliana Ca ( 2 + ) - dependent protein kinase11 ( CPK11 ) and CPK24 are involved in Ca ( 2 + ) - dependent regulation of the inward K ( + ) ( K ( + ) in ) channels in pollen tubes .
 Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + ); Chemical: K ( + ); Chemical: K ( + )
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: Ca ( 2 + ); Chemical: Ca ( 2 + ); Chemical: K ( + ); Chemical: K ( + )