id	keyword
eurjchem-2435	copper
eurjchem-2435	water
eurjchem-2435	groundwater
eurjchem-2435	iron
eurjchem-2435	surajgarh
eurjchem-2435	content
eurjchem-2435	tehsil
eurjchem-2435	study
eurjchem-2435	drinking
eurjchem-2435	samples
eurjchem-2435	chirawa
eurjchem-2435	area