Oskar Lenz
In 1885-87 he directed the Austro-Hungarian Congo Expedition , a mission that involved crossing the African continent from the Congo eastward to the Indian Ocean . The main reasons of the project were to survey the economic trade situation in the newly established Congo Free State and to map the Congo-Nile watershed between the Nile and Congo Rivers . 
<triplet> Congo-Nile watershed <subj> Nile <obj> facet of <subj> Congo River <obj> facet of