7342
The resulting concentrations of H ( 2 ) , H ( 2 ) O ( 2 ) , Co ( II ) and Co ( III ) species in solution and the chemical composition and sizes of particles that were formed were measured as a function of irradiation time .
 Chemical: H ( 2 ); Chemical: H ( 2 ) O ( 2 ); Chemical: Co ( II ); Chemical: Co ( III )
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: H ( 2 ); Chemical: H ( 2 ) O ( 2 ); Chemical: Co ( II ); Chemical: Co ( III )