14822
Zr ( IV ) increased Hb binding constant to alpha - ZrP by 43 - fold , and affinity enhancements followed the trend Zr ( IV ) > H ( I ) > Mg ( II ) > Na ( I ) > Ca ( II ) > Cr ( III ) .
 Chemical: Zr ( IV ); Chemical: alpha - ZrP; Chemical: Zr ( IV ); Chemical: H ( I ); Chemical: Mg ( II ); Chemical: Na ( I ); Chemical: Ca ( II ); Chemical: Cr ( III )
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: Zr ( IV ), alpha - ZrP, Zr ( IV ), H ( I ), Mg ( II ), Na ( I ), Ca ( II ), Cr ( III ) 
Answer:
 Chemical: Zr ( IV ); Chemical: alpha - ZrP; Chemical: Zr ( IV ); Chemical: H ( I ); Chemical: Mg ( II ); Chemical: Na ( I ); Chemical: Ca ( II ); Chemical: Cr ( III )