This is the 16600th most frequent Polish word.
wozów
"Of carts" or "of wagons" (genitive plural form).
In this sentence, 'wozów' is the plural genitive form of 'wozy', referring to 'carts'. It signifies possession or quantity.
W parku stało pięć drewnianych wozów.
There were five wooden carts in the park.
Here, 'wozów' functions as a descriptor in the genitive case, associating the carts with horses in the race.
Słyszałam o wyścigu wozów konnych.
I heard about the horse cart race.
The term 'wozów' in this context refers to 'fire trucks' in the genitive case, integral to the parade description.