id	keyword
ertr-538	reviews
ertr-538	tourism
ertr-538	topics
ertr-538	research
ertr-538	analysis
ertr-538	lda
ertr-538	museum
ertr-538	site
ertr-538	star
ertr-538	terracotta
ertr-538	vol
ertr-538	ertr
ertr-538	place
ertr-538	http://ertr.tamu.edu/
ertr-538	china