| http://www.w3.org/ns/prov#value | - Only the latter is widely grown in Africa but it is not very resistant to drought.Much of Africa is heavily dependent on millet, tubers and other staples which have been by-passed by the green revolution.And in a Brookings Institution paper called Ending Africa's Poverty Trap published last year, American economist Jeffrey Sachs pointed out that while Africa has its fertile regions, much of the
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