id	keyword
ertr-840	reviews
ertr-840	hotel
ertr-840	tourism
ertr-840	research
ertr-840	consumers
ertr-840	online
ertr-840	brand
ertr-840	journal
ertr-840	food
ertr-840	marketing
ertr-840	study
ertr-840	travel
ertr-840	service
ertr-840	tourism research
ertr-840	information
ertr-840	analysis
ertr-840	vol
ertr-840	customers