Jakarta lies on a low, flat alluvial plain with historically extensive swampy areas; the parts of the city farther inland are slightly higher.
The cities are higher than the swampy areas. 
( z1 have-degree :ARG1 ( z2 city ) :ARG2 ( z3 high :ARG1 z2 ) :ARG3 ( z4 more ) :ARG4 ( z5 area :mod ( z6 swamp ) ) )