id	keyword
ertr-410	tourism
ertr-410	image
ertr-410	research
ertr-410	films
ertr-410	destination
ertr-410	tourism research
ertr-410	city
ertr-410	barcelona
ertr-410	visitors
ertr-410	vol
ertr-410	ertr
ertr-410	sites
ertr-410	review
ertr-410	tourists
ertr-410	http://ertr.tamu.edu/