id	keyword
american_scientific_journal-3987	basin
american_scientific_journal-3987	benin
american_scientific_journal-3987	sequence
american_scientific_journal-3987	benin basin
american_scientific_journal-3987	cretaceous
american_scientific_journal-3987	american
american_scientific_journal-3987	transform
american_scientific_journal-3987	formation
american_scientific_journal-3987	benue
american_scientific_journal-3987	albian
american_scientific_journal-3987	hydrocarbon
american_scientific_journal-3987	journal
american_scientific_journal-3987	trough
american_scientific_journal-3987	west
american_scientific_journal-3987	guinea