11239
In the soil , the content of As extracted with acqua regia and that extracted with ammonium acetate , were analyzed .
 Chemical: As; Chemical: ammonium acetate
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; Chemical: ammonium acetate