Everything suggests that there was less trypanosomiasis , both the human and cattle kinds , in Africa in 1837 than in 1937 , when an entomologist mapped the spread of tsetse in Tanzania .
Africa /location/location/contains Tanzania
NN VBZ IN EX VBD JJR NN , CC DT JJ CC NNS NNS , IN NNP IN CD IN IN CD , WRB DT NN VBD DT NN IN NN IN NNP .
Africa
LOCATION
Tanzania
LOCATION
/location/location/contains