id	keyword
american_scientific_journal-6716	plants
american_scientific_journal-6716	species
american_scientific_journal-6716	shrub
american_scientific_journal-6716	study
american_scientific_journal-6716	sets
american_scientific_journal-6716	khartoum
american_scientific_journal-6716	palm
american_scientific_journal-6716	scientific
american_scientific_journal-6716	arecaceae
american_scientific_journal-6716	journal
american_scientific_journal-6716	sciences