id	keyword
hom-91	medical
hom-91	meteorology
hom-91	health
hom-91	weather
hom-91	climate
hom-91	disease
hom-91	hong
hom-91	kong
hom-91	singapore
hom-91	history
hom-91	tropical
hom-91	colonial
hom-91	british
hom-91	press
hom-91	india
hom-91	cholera
hom-91	straits
hom-91	century
hom-91	report
hom-91	meteorological
hom-91	water
hom-91	example