timestamp	ip	host	browser	uri
20180316-02:58:10	34.204.81.21	ec2-34-204-81-21.compute-1.amazonaws.com	BUbiNG (+http://law.di.unimi.it/BUbiNG.html#wc)	/robots.txt
20180316-03:08:21	34.204.81.21	ec2-34-204-81-21.compute-1.amazonaws.com	BUbiNG (+http://law.di.unimi.it/BUbiNG.html#wc)	/robots.txt