id	keyword
american_scientific_journal-4189	losses
american_scientific_journal-4189	grain
american_scientific_journal-4189	maize
american_scientific_journal-4189	weight
american_scientific_journal-4189	transportation
american_scientific_journal-4189	kernel
american_scientific_journal-4189	stress
american_scientific_journal-4189	farmer
american_scientific_journal-4189	volume
american_scientific_journal-4189	warehouse
american_scientific_journal-4189	shelling