id	keyword
fbem-3687	china
fbem-3687	route
fbem-3687	railway
fbem-3687	electric
fbem-3687	emissions
fbem-3687	transport
fbem-3687	europe
fbem-3687	future
fbem-3687	express
fbem-3687	transportation
fbem-3687	co2
fbem-3687	cer
fbem-3687	diesel
fbem-3687	carbon
fbem-3687	countries
fbem-3687	freight
fbem-3687	line
fbem-3687	energy
fbem-3687	hamburg