This is the 15763rd most frequent Turkish word.
tiyatroda
"In the theatre."
In this sentence, 'tiyatroda' indicates the location where the activity (watching a play) took place.
Tiyatroda yakın bir arkadaşımın oyununu izledim.
I watched a play of a close friend at the theater.
Here, 'tiyatroda' refers to the place where event organization occurs.
Tiyatroda farklı türde birçok etkinlik düzenleniyor.
Various types of events are organized at the theater.
In this case, 'tiyatroda' designates the location of employment.