id	keyword
app01-10628	saf
app01-10628	fuel
app01-10628	aviation
app01-10628	emissions
app01-10628	model
app01-10628	co2
app01-10628	business
app01-10628	jet
app01-10628	refueling
app01-10628	operator
app01-10628	strategy
app01-10628	analysis