id	keyword
app01-10444	line
app01-10444	bus
app01-10444	transport
app01-10444	delay
app01-10444	time
app01-10444	travel
app01-10444	value
app01-10444	trip
app01-10444	table
app01-10444	survey
app01-10444	purposes
app01-10444	figure