id	keyword
abc-1586	lettuce
abc-1586	bio
abc-1586	s-90
abc-1586	megagreen
abc-1586	content
abc-1586	treatment
abc-1586	yield
abc-1586	signifi
abc-1586	effect
abc-1586	plant
abc-1586	mass
abc-1586	control
abc-1586	nitrate