id	keyword
bitcs-1872	system
bitcs-1872	location
bitcs-1872	dormitory
bitcs-1872	distance
bitcs-1872	page
bitcs-1872	haversine
bitcs-1872	mobile
bitcs-1872	longitude
bitcs-1872	application
bitcs-1872	point
bitcs-1872	formula
bitcs-1872	latitude