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As a proof of concept , we employed a Protein Kinase A ( PKA ) - dependent switch and coupled it to a lipid phosphatase to manipulate the level of phosphatidylinositol 4 , 5 - bisphosphate ( PI ( 4 , 5 ) P ( 2 ) ) in living cells .
 Chemical: phosphatidylinositol 4 , 5 - bisphosphate; Chemical: PI ( 4 , 5 ) P ( 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: phosphatidylinositol 4 , 5 - bisphosphate; Chemical: PI ( 4 , 5 ) P ( 2 )