Banning ivory is the surest road to extinction for the African elephant, argue leaders in those countries.
Selling ivory is good for the African elephant population. 
( z1 good :ARG1 ( z2 sell :ARG1 ( z3 ivory ) ) :ARG2 ( z4 population :mod ( z5 elephant ) :location ( z6 continent :name ( z7 name :op "Africa" ) ) ) )