id	keyword
american_scientific_journal-6840	energy
american_scientific_journal-6840	heat
american_scientific_journal-6840	hospitals
american_scientific_journal-6840	solar
american_scientific_journal-6840	cooling
american_scientific_journal-6840	use
american_scientific_journal-6840	heating
american_scientific_journal-6840	systems
american_scientific_journal-6840	biomass
american_scientific_journal-6840	water
american_scientific_journal-6840	generation