5396
From a large monitoring data set developed by the West Virginia Department of Environmental Protection , 162 < 20 - km ( 2 ) - watersheds were identified that had detailed land cover information in southwestern West Virginia with at least one water chemistry sample .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None