4076
The upper detergent - poor phase extract was subsequently fractionated by 40 - 80 % ammonium sulfate and chromatographed on HiTrap Phenyl Sepharose and Superdex 200 HR 10 / 30 .
 Chemical: ammonium sulfate; Chemical: Phenyl
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: ammonium sulfate; Chemical: Phenyl