De or het stoomtramverbinding?

The correct Dutch article is:

de stoomtramverbinding

Rule Words ending in -ing: almost always de. See the rule

How to use stoomtramverbinding

the stoomtramverbindingde stoomtramverbinding
this stoomtramverbindingdeze stoomtramverbinding
that stoomtramverbindingdie stoomtramverbinding
our stoomtramverbindingonze stoomtramverbinding
your stoomtramverbindingjouw stoomtramverbinding
every stoomtramverbindingelke stoomtramverbinding
which stoomtramverbinding?welke stoomtramverbinding?
a big stoomtramverbinding / the big stoomtramverbindingeen grote stoomtramverbinding, de grote stoomtramverbinding