id	keyword
american_scientific_journal-9700	clusters
american_scientific_journal-9700	invoice
american_scientific_journal-9700	customers
american_scientific_journal-9700	data
american_scientific_journal-9700	class
american_scientific_journal-9700	range
american_scientific_journal-9700	number
american_scientific_journal-9700	month
american_scientific_journal-9700	complaints
american_scientific_journal-9700	sampling