16308
Moreover , a negative and statistically significant correlation between Mn concentrations in the Ulva thalli and the river water was observed .
 Chemical: Mn
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: Mn 
Answer:
 Chemical: Mn