8253
Higher tolerance to As ( 3 + ) [ maximum tolerable concentration ( MTC ) : >= 10 mM ] , As ( 5 + ) ( MTC : >= 100 mM ) and other heavy metals like Cu ( 2 + ) , Cr ( 2 + ) , Ni ( 2 + ) etc .
 Chemical: As ( 3 + ); Chemical: As; Chemical: Cu ( 2 + ); Chemical: Cr ( 2 + ); Chemical: Ni ( 2 + )
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: As ( 3 + ); Chemical: As; Chemical: Cu ( 2 + ); Chemical: Cr ( 2 + ); Chemical: Ni ( 2 + )