id	keyword
american_scientific_journal-4498	water
american_scientific_journal-4498	pakistan
american_scientific_journal-4498	diseases
american_scientific_journal-4498	waterborne
american_scientific_journal-4498	journal
american_scientific_journal-4498	drinking
american_scientific_journal-4498	sanitation
american_scientific_journal-4498	health
american_scientific_journal-4498	quality
american_scientific_journal-4498	technology
american_scientific_journal-4498	cause