5409
In contrast , antagonists to the sphingosine - 1 - phosphate type 1 receptor ( previously shown to mediate As ( III ) vascular effects ) or the angiotensin II type 1 receptor were ineffective in blocking As ( III ) effects .
 Chemical: sphingosine - 1 - phosphate; Chemical: As ( III ); Chemical: As ( 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: sphingosine - 1 - phosphate, As ( III ), As ( III ) 
Answer:
 Chemical: sphingosine - 1 - phosphate; Chemical: As ( III ); Chemical: As ( III )