8259
Based on the results we propose that under the prevailing low nutrient condition inhabitant bacteria capable of using inorganic electron donors play a synergistic role wherein siderophores and phosphatase activities facilitate the release of sediment bound As ( 5 + ) , which is subsequently reduced by arsenate reductase resulting into the mobilization of As ( 3 + ) in groundwater .
 Chemical: As ( 5 + ); Chemical: arsenate; Chemical: As ( 3 + )
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 ( 5 + ); Chemical: arsenate; Chemical: As ( 3 + )