id	keyword
essd-678	passivhaus
essd-678	energy
essd-678	buildings
essd-678	qatar
essd-678	phv
essd-678	standard
essd-678	project
essd-678	performance
essd-678	figure
essd-678	use
essd-678	stv
essd-678	villas
essd-678	development
essd-678	khalfan