id	keyword
eaes-3662	concentration
eaes-3662	kerosene
eaes-3662	lpg
eaes-3662	surface
eaes-3662	particles
eaes-3662	area
eaes-3662	indoor
eaes-3662	study
eaes-3662	activities
eaes-3662	cooking
eaes-3662	levels
eaes-3662	house
eaes-3662	science