17059
In vitro studies have illustrated that the Al ( 3 + ) - HA complex has anti - cancer activity .
 Chemical: Al ( 3 + )
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: Al ( 3 + ) 
Answer:
 Chemical: Al ( 3 + )