id	keyword
american_scientific_journal-4350	nyamulagira
american_scientific_journal-4350	volcano
american_scientific_journal-4350	nyiragongo
american_scientific_journal-4350	lava
american_scientific_journal-4350	lake
american_scientific_journal-4350	activity
american_scientific_journal-4350	earthquakes
american_scientific_journal-4350	volcanoes