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Triggers of eryptosis include increase of cytosolic Ca ( 2 + ) - activity [ Ca ( 2 + ) ] ( i ) following activation of oxidant - sensitive Ca ( 2 + ) - permeable cation channels , ceramide formation and / or ATP - depletion .
 Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + ); Chemical: Ca ( 2 + ); Chemical: ceramide; Chemical: ATP
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: Ca ( 2 + ); Chemical: ceramide; Chemical: ATP