The building of the Aswan dam has stopped the annual flood and the fertility of the land is deteriorating although the dam does allow irrigation, it also generates hydro-electric power and so has proved to be a mixed blessing.
(the fertility of the land; is deteriorating; ) (the dam; does allow; irrigation) (it; generates; hydro-electric power) Context(it generates,List([146, 163))):(The building of the Aswan dam; has stopped; the annual flood)
it generates,List([146, 163))
the fertility of the land the dam it The building of the Aswan dam
is deteriorating does allow generates has stopped
irrigation
hydro-electric power
the annual flood