This is the 8200th most frequent Polish word.
opolem
"Opolem" is the instrumental case of "Opole," a city in Poland, meaning "with/by Opole."
In this sentence, 'Opole' refers to the proper noun of the city, and its declension 'Opolem' is used in the instrumental case due to the preposition 'przez', indicating movement through the city.
Wczoraj przejechałem przez Opole i podziwiałem jego zabytki.
Yesterday I passed through Opole and admired its landmarks.
Here, 'Opole' stands as the proper noun of the city, and the instrumental case 'Opolem' is utilized because the action involves interaction or relation to the city.
Rozmawiałem z mieszkańcami Opola na temat lokalnych tradycji.
I talked with the residents of Opole about local traditions.
This sentence uses 'Opole' as the city’s proper noun in the locative case because of the preposition 'do', denoting a destination.