This is the 2578th most frequent Polish word.
sewastopolu
The word "Sewastopolu" is the locative case of "Sewastopol," which refers to the city of Sevastopol in Poland. In this case, it denotes "in Sevastopol" or "about Sevastopol."
Here, 'Sewastopolu' is the locative case of 'Sewastopol', used to specify a location.
W Sewastopolu znajduje się słynny port wojenny.
In Sevastopol, there is a famous naval port.
In this sentence, 'Sewastopolu' is the locative case used after the preposition 'o' (about).
Myślę o Sewastopolu jako o ważnym mieście historycznym.
I think of Sevastopol as an important historical city.
Here, 'Sewastopolu' again indicates location in the locative case, showing where the walking occurs.