id	keyword
app01-8645	construction
app01-8645	building
app01-8645	africa
app01-8645	waste
app01-8645	urban
app01-8645	asia
app01-8645	global
app01-8645	environment
app01-8645	life
app01-8645	population
app01-8645	latin
app01-8645	design
app01-8645	case