Jakarta lies on a low, flat alluvial plain with historically extensive swampy areas; the parts of the city farther inland are slightly higher.
Jakarta has always been a city
The article implies it is a city, but does not say it always was. It could have been a small town at one point
( z1 city :domain ( z2 city :name ( z3 name :op "Jakarta" ) ) :time ( z4 always ) )