id	keyword
gojar-5992	oil
gojar-5992	food
gojar-5992	delta
gojar-5992	niger
gojar-5992	spills
gojar-5992	niger delta
gojar-5992	nigeria
gojar-5992	oil spills
gojar-5992	security
gojar-5992	region
gojar-5992	research
gojar-5992	journal
gojar-5992	global
gojar-5992	vol
gojar-5992	gojar
gojar-5992	food security